diff --git a/.github/workflows/release-version-update.yml b/.github/workflows/release-version-update.yml
deleted file mode 100644
index a5eebaabe..000000000
--- a/.github/workflows/release-version-update.yml
+++ /dev/null
@@ -1,69 +0,0 @@
-name: Update version.json and create PR
-
-# Trigger the github action when a new release is published
-on:
-  release:
-    types: [published]
-
-jobs:
-  update-version:
-    runs-on: ubuntu-latest
-
-    steps:
-
-    # Step 1: Checkout repository
-    - name: Checkout repository
-      uses: actions/checkout@v3
-
-    # Step 2: Get latest release version information
-    - name: Get release information
-      id: get_release
-      run: |
-        response=$(curl -s -H "Authorization: token ${{ secrets.GITHUB_TOKEN }}" https://api.github.com/repos/${{ github.repository }}/releases/latest)
-        echo "$response" | jq '.tag_name, .name, .published_at, .html_url' | tee /tmp/release_info
-        echo "tag_name=$(echo "$response" | jq -r .tag_name)" >> $GITHUB_ENV
-        echo "name=$(echo "$response" | jq -r .name)" >> $GITHUB_ENV
-        echo "published_at=$(echo "$response" | jq -r .published_at)" >> $GITHUB_ENV
-        echo "html_url=$(echo "$response" | jq -r .html_url)" >> $GITHUB_ENV
-
-    # Step 3: Update version.json file with latest information
-    - name: Update version.json
-      run: |
-        echo '{
-          "tag_name": "${{ env.tag_name }}",
-          "release_name": "${{ env.name }}",
-          "published_at": "${{ env.published_at }}",
-          "html_url": "${{ env.html_url }}"
-        }' > version.json
-
-    # Step 4: Configure a user to create a branch and then push changes
-    - name: Configure Git user
-      run: |
-        git config --global user.name "GitHub Actions"
-        git config --global user.email "actions@github.com"
-
-    # Step 5: Create a new branch for version updates
-    - name: Create new branch
-      run: |
-        git checkout -b update-version-${{ env.tag_name }}
-        git add version.json
-        git commit -m "Update version.json for release ${{ env.tag_name }}"
-
-    # Step 6: Push branch
-    - name: Push branch
-      run: |
-        git push origin update-version-${{ env.tag_name }}
-      env:
-        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-
-    # Step 7: Create a pull request from the pushed branch
-    - name: Create Pull Request
-      run: |
-        curl -X POST -H "Authorization: token ${{ secrets.GITHUB_TOKEN }}" -H "Accept: application/vnd.github.v3+json" \
-        https://api.github.com/repos/${{ github.repository }}/pulls \
-        -d '{
-          "title": "[RELEASE ${{ env.tag_name }}] Update version.json for release ${{ env.tag_name }}",
-          "body": "This PR updates version.json with the latest release information: ${{ env.tag_name }}",
-          "head": "update-version-${{ env.tag_name }}",
-          "base": "develop"
-        }'
diff --git a/compute_worker/compute_worker.py b/compute_worker/compute_worker.py
index 34ea6a303..4742e90f8 100644
--- a/compute_worker/compute_worker.py
+++ b/compute_worker/compute_worker.py
@@ -280,7 +280,7 @@ async def watch_detailed_results(self):
             else:
                 logger.info(time.time() - start)
                 if time.time() - start > expiration_seconds:
-                    timeout_error_message = f"Detailed results not written to after {expiration_seconds} seconds, exiting!"
+                    timeout_error_message = f"WARNING: Detailed results not written before the execution."
                     logger.warning(timeout_error_message)
             await asyncio.sleep(5)
             file_path = self.get_detailed_results_file_path()
diff --git a/src/apps/api/serializers/competitions.py b/src/apps/api/serializers/competitions.py
index f617fa6b9..d35fed024 100644
--- a/src/apps/api/serializers/competitions.py
+++ b/src/apps/api/serializers/competitions.py
@@ -43,6 +43,8 @@ class Meta:
             'max_submissions_per_person',
             'auto_migrate_to_this_phase',
             'hide_output',
+            'hide_prediction_output',
+            'hide_score_output',
             'leaderboard',
             'public_data',
             'starting_kit',
@@ -124,6 +126,8 @@ class Meta:
             'max_submissions_per_person',
             'auto_migrate_to_this_phase',
             'hide_output',
+            'hide_prediction_output',
+            'hide_score_output',
             # no leaderboard
             'public_data',
             'starting_kit',
diff --git a/src/apps/api/serializers/submissions.py b/src/apps/api/serializers/submissions.py
index d14df9e11..6def18976 100644
--- a/src/apps/api/serializers/submissions.py
+++ b/src/apps/api/serializers/submissions.py
@@ -261,7 +261,7 @@ def get_data_file(self, instance):
 
     def get_prediction_result(self, instance):
         if instance.prediction_result.name:
-            if instance.phase.hide_output and not instance.phase.competition.user_has_admin_permission(self.context['request'].user):
+            if (instance.phase.hide_output or instance.phase.hide_prediction_output) and not instance.phase.competition.user_has_admin_permission(self.context['request'].user):
                 return None
             return make_url_sassy(instance.prediction_result.name)
 
@@ -271,7 +271,7 @@ def get_detailed_result(self, instance):
 
     def get_scoring_result(self, instance):
         if instance.scoring_result.name:
-            if instance.phase.hide_output and not instance.phase.competition.user_has_admin_permission(self.context['request'].user):
+            if (instance.phase.hide_output or instance.phase.hide_score_output) and not instance.phase.competition.user_has_admin_permission(self.context['request'].user):
                 return None
             return make_url_sassy(instance.scoring_result.name)
 
diff --git a/src/apps/api/views/competitions.py b/src/apps/api/views/competitions.py
index 4f53f7f31..f5d464761 100644
--- a/src/apps/api/views/competitions.py
+++ b/src/apps/api/views/competitions.py
@@ -275,6 +275,8 @@ def update(self, request, *args, **kwargs):
                             name=phase["name"],
                             description=phase["description"],
                             hide_output=phase["hide_output"],
+                            hide_prediction_output=phase["hide_prediction_output"],
+                            hide_score_output=phase["hide_score_output"],
                             competition=Competition.objects.get(id=data['id'])
                         )
                         # Get phase id
diff --git a/src/apps/api/views/submissions.py b/src/apps/api/views/submissions.py
index 5bcbffc1a..afe14fb36 100644
--- a/src/apps/api/views/submissions.py
+++ b/src/apps/api/views/submissions.py
@@ -204,7 +204,7 @@ def soft_delete(self, request, pk):
             return Response({'error': 'You are not allowed to delete a leaderboard submission'}, status=status.HTTP_403_FORBIDDEN)
 
         # Check if submission is in running state
-        if submission.status not in [Submission.FAILED, Submission.FINISHED]:
+        if submission.status not in [Submission.FAILED, Submission.FINISHED, Submission.CANCELLED]:
             return Response({'error': 'You are not allowed to delete a running submission'}, status=status.HTTP_403_FORBIDDEN)
 
         # Check if submission is not already soft deleted
@@ -351,16 +351,47 @@ def re_run_many_submissions(self, request):
 
     @action(detail=False, methods=['get'])
     def download_many(self, request):
+        """
+        Download a ZIP containing several submissions.
+        """
         pks = request.query_params.get('pks')
         if pks:
             pks = json.loads(pks)  # Convert JSON string to list
+        else:
+            return Response({"error": "`pks` query parameter is required"}, status=400)
+
+        # Get submissions
+        submissions = Submission.objects.filter(pk__in=pks).select_related(
+            "owner",
+            "phase__competition",
+            "phase__competition__created_by",
+        ).prefetch_related("phase__competition__collaborators")
+        if submissions.count() != len(pks):
+            return Response({"error": "One or more submission IDs are invalid"}, status=404)
+
+        # Check permissions
+        if not request.user.is_authenticated:
+            raise PermissionDenied("You must be logged in to download submissions")
+        # Allow admins
+        if request.user.is_superuser or request.user.is_staff:
+            allowed = True
+        else:
+            # Build one Q object for "owner OR organizer"
+            organiser_q = (
+                Q(phase__competition__created_by=request.user) |
+                Q(phase__competition__collaborators=request.user)
+            )
+            # Submissions that violate the rule
+            disallowed = submissions.exclude(Q(owner=request.user) | organiser_q)
+            allowed = not disallowed.exists()
+        if not allowed:
+            raise PermissionDenied(
+                "You do not have permission to download one or more of the requested submissions"
+            )
 
-        # Doing a local import here to avoid circular imports
+        # Download
         from competitions.tasks import stream_batch_download
-
-        # in_memory_zip = stream_batch_download.apply_async((pks,)).get()
         in_memory_zip = stream_batch_download(pks)
-
         response = StreamingHttpResponse(in_memory_zip, content_type='application/zip')
         response['Content-Disposition'] = 'attachment; filename="bulk_submissions.zip"'
         return response
diff --git a/src/apps/competitions/migrations/0054_auto_20250321_1341.py b/src/apps/competitions/migrations/0054_auto_20250321_1341.py
new file mode 100644
index 000000000..e5b7a6451
--- /dev/null
+++ b/src/apps/competitions/migrations/0054_auto_20250321_1341.py
@@ -0,0 +1,18 @@
+# Generated by Django 2.2.28 on 2025-03-21 13:41
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('competitions', '0053_auto_20250218_1151'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='submissiondetails',
+            name='file_size',
+            field=models.DecimalField(blank=True, decimal_places=2, max_digits=15, null=True),
+        ),
+    ]
diff --git a/src/apps/competitions/migrations/0056_merge_20250324_2128.py b/src/apps/competitions/migrations/0056_merge_20250324_2128.py
new file mode 100644
index 000000000..16554ffa0
--- /dev/null
+++ b/src/apps/competitions/migrations/0056_merge_20250324_2128.py
@@ -0,0 +1,14 @@
+# Generated by Django 2.2.28 on 2025-03-24 21:28
+
+from django.db import migrations
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('competitions', '0054_auto_20250321_1341'),
+        ('competitions', '0055_merge_20250324_0650'),
+    ]
+
+    operations = [
+    ]
diff --git a/src/apps/competitions/migrations/0057_phase_hide_score_output.py b/src/apps/competitions/migrations/0057_phase_hide_score_output.py
new file mode 100644
index 000000000..1f805e0f4
--- /dev/null
+++ b/src/apps/competitions/migrations/0057_phase_hide_score_output.py
@@ -0,0 +1,18 @@
+# Generated by Django 2.2.28 on 2025-04-25 09:59
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('competitions', '0056_merge_20250324_2128'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='phase',
+            name='hide_score_output',
+            field=models.BooleanField(default=False),
+        ),
+    ]
diff --git a/src/apps/competitions/migrations/0058_phase_hide_prediction_output.py b/src/apps/competitions/migrations/0058_phase_hide_prediction_output.py
new file mode 100644
index 000000000..0c241ca2b
--- /dev/null
+++ b/src/apps/competitions/migrations/0058_phase_hide_prediction_output.py
@@ -0,0 +1,18 @@
+# Generated by Django 2.2.28 on 2025-05-14 19:37
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('competitions', '0057_phase_hide_score_output'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='phase',
+            name='hide_prediction_output',
+            field=models.BooleanField(default=False),
+        ),
+    ]
diff --git a/src/apps/competitions/models.py b/src/apps/competitions/models.py
index 4d938895f..d8ce83dad 100644
--- a/src/apps/competitions/models.py
+++ b/src/apps/competitions/models.py
@@ -342,6 +342,8 @@ class Phase(ChaHubSaveMixin, models.Model):
     auto_migrate_to_this_phase = models.BooleanField(default=False)
     has_been_migrated = models.BooleanField(default=False)
     hide_output = models.BooleanField(default=False)
+    hide_prediction_output = models.BooleanField(default=False)
+    hide_score_output = models.BooleanField(default=False)
 
     has_max_submissions = models.BooleanField(default=True)
     max_submissions_per_day = models.PositiveIntegerField(default=5, null=True, blank=True)
diff --git a/src/apps/competitions/tasks.py b/src/apps/competitions/tasks.py
index 87501be20..9b685d1d7 100644
--- a/src/apps/competitions/tasks.py
+++ b/src/apps/competitions/tasks.py
@@ -82,6 +82,8 @@
     'execution_time_limit',
     'auto_migrate_to_this_phase',
     'hide_output',
+    'hide_prediction_output',
+    'hide_score_output',
 ]
 PHASE_FILES = [
     "input_data",
diff --git a/src/apps/competitions/tests/unpacker_test_data.py b/src/apps/competitions/tests/unpacker_test_data.py
index db69ec6dd..b2ee7e075 100644
--- a/src/apps/competitions/tests/unpacker_test_data.py
+++ b/src/apps/competitions/tests/unpacker_test_data.py
@@ -213,6 +213,9 @@
         'starting_kit': None,
         'tasks': [0],
         'status': 'Previous',
+        'hide_output': False,
+        'hide_prediction_output': False,
+        'hide_score_output': False,
     },
     {
         'index': 1,
@@ -230,14 +233,12 @@
         'tasks': [1],
         'status': 'Current',
         'is_final_phase': True,
+        'hide_output': False,
+        'hide_prediction_output': False,
+        'hide_score_output': False,
     }
 ]
 
-V2_SPECIFIC_PHASE_DATA = [
-    # Tuples of (key, value) of data specific to v2 unpacker.
-    ('hide_output', False)
-]
-
 
 def get_phases(version):
     if version == 1:
@@ -246,9 +247,6 @@ def get_phases(version):
         # Make a copy of the list so we aren't mutating the original phases object. May not be strictly necessary,
         # but if we ever write a test comparing v1 to v2 or something, this would avoid bugs.
         v2 = [{k: v for k, v in phase.items()} for phase in PHASES]
-        for phase in v2:
-            for key, value in V2_SPECIFIC_PHASE_DATA:
-                phase[key] = value
         return v2
 
 
diff --git a/src/apps/competitions/unpackers/v1.py b/src/apps/competitions/unpackers/v1.py
index dc476a5c2..535e9e2d5 100644
--- a/src/apps/competitions/unpackers/v1.py
+++ b/src/apps/competitions/unpackers/v1.py
@@ -88,6 +88,9 @@ def _unpack_phases(self):
                 'max_submissions_per_day': phase.get('max_submissions_per_day', 5),
                 'max_submissions_per_person': phase.get('max_submissions', 100),
                 'auto_migrate_to_this_phase': phase.get('auto_migration', False),
+                'hide_output': phase.get('hide_output', False),
+                'hide_prediction_output': phase.get('hide_prediction_output', False),
+                'hide_score_output': phase.get('hide_score_output', False),
             }
             execution_time_limit = phase.get('execution_time_limit')
             if execution_time_limit:
diff --git a/src/apps/competitions/unpackers/v2.py b/src/apps/competitions/unpackers/v2.py
index 85eddefcb..508479eba 100644
--- a/src/apps/competitions/unpackers/v2.py
+++ b/src/apps/competitions/unpackers/v2.py
@@ -198,6 +198,8 @@ def _unpack_phases(self):
                 'max_submissions_per_person': phase_data.get('max_submissions', 100),
                 'auto_migrate_to_this_phase': phase_data.get('auto_migrate_to_this_phase', False),
                 'hide_output': phase_data.get('hide_output', False),
+                'hide_prediction_output': phase_data.get('hide_prediction_output', False),
+                'hide_score_output': phase_data.get('hide_score_output', False),
             }
             try:
                 new_phase['tasks'] = phase_data['tasks']
diff --git a/src/static/riot/competitions/detail/submission_manager.tag b/src/static/riot/competitions/detail/submission_manager.tag
index e5a5f1f7c..74b746cc6 100644
--- a/src/static/riot/competitions/detail/submission_manager.tag
+++ b/src/static/riot/competitions/detail/submission_manager.tag
@@ -168,9 +168,9 @@
                         <i class="icon share grey alternate"></i>
                     </span>
                     <!-- Delete Submission -->
-                    <!--  Show only if submission is Finished/Failed and not admin interface  -->
+                    <!--  Show only if submission is Finished/Failed/Cancelled and not admin interface  -->
                     <!--  This condition && !opts.admin is there to not show soft delete button in the admin interface  -->
-                    <span if="{ ((submission.status === 'Finished' && !submission.on_leaderboard) || submission.status === 'Failed')  && !opts.admin}"
+                    <span if="{ ((submission.status === 'Finished' && !submission.on_leaderboard) || submission.status === 'Failed' || submission.status === 'Cancelled')  && !opts.admin}"
                         data-tooltip="Delete Submission" data-inverted=""
                         onclick="{ soft_delete_submission.bind(this, submission) }">
                         <i class="icon red trash"></i>
diff --git a/src/static/riot/competitions/detail/submission_modal.tag b/src/static/riot/competitions/detail/submission_modal.tag
index 55cb5dde4..0961c0b0b 100644
--- a/src/static/riot/competitions/detail/submission_modal.tag
+++ b/src/static/riot/competitions/detail/submission_modal.tag
@@ -22,12 +22,12 @@
                             </td>
                         </tr>
                         <tr>
-                            <td class="selectable file-download {disabled: !prediction_result}">
+                            <td class="selectable file-download {disabled: !prediction_result}" show="{!opts.hide_prediction_output}">
                                 <a href="{ prediction_result }"><i class="file outline icon"></i>Output from prediction step</a>
                             </td>
                         </tr>
                         <tr>
-                            <td class="selectable file-download {disabled: !scoring_result}">
+                            <td class="selectable file-download {disabled: !scoring_result}" show="{!opts.hide_score_output}">
                                 <a href="{ scoring_result }"><i class="file outline icon"></i>Output from scoring step</a>
                             </td>
                         </tr>
diff --git a/src/static/riot/competitions/editor/_phases.tag b/src/static/riot/competitions/editor/_phases.tag
index fd0e09cd5..a9c318c28 100644
--- a/src/static/riot/competitions/editor/_phases.tag
+++ b/src/static/riot/competitions/editor/_phases.tag
@@ -190,10 +190,31 @@
                         </div>
                         <div class="field">
                             <div class="ui checkbox">
-                                <label>Hide Submission Output</label>
+                                <label>Hide Submission Output
+                                    <span data-tooltip="Hide all submission output" data-inverted=""
+                              data-position="bottom center"><i class="help icon circle"></i></span>
+                                </label>
                                 <input type="checkbox" ref="hide_output">
                             </div>
                         </div>
+                        <div class="field">
+                            <div class="ui checkbox">
+                                <label>Hide Prediction Output 
+                                    <span data-tooltip="Prevent participants from downloading 'Output from prediction step'" data-inverted=""
+                              data-position="bottom center"><i class="help icon circle"></i></span>
+                                </label>
+                                <input type="checkbox" ref="hide_prediction_output">
+                            </div>
+                        </div>
+                        <div class="field">
+                            <div class="ui checkbox">
+                                <label>Hide Score Output 
+                                    <span data-tooltip="Prevent participants from downloading 'Output from scoring step'" data-inverted=""
+                              data-position="bottom center"><i class="help icon circle"></i></span>
+                                </label>
+                                <input type="checkbox" ref="hide_score_output">
+                            </div>
+                        </div>
 
                         <div class="inline field" if="{phases.length > 0 && ![null, undefined, 0].includes(selected_phase_index)}">
                             <div class="ui checkbox">
@@ -420,22 +441,10 @@
                     }
                 }
 
-                // Create a new options object for the start date calendar by combining 'date_options'
-                // with an additional option to link the end date calendar. This ensures that the start date
-                // cannot be after the selected end date.
-                var start_options = Object.assign({}, date_options, {endCalendar: self.refs.calendar_end_date})
-                
-                // Similarly, create a new options object for the end date calendar, linking it to the start date.
-                // This ensures that the end date cannot be before the selected start date.
-                var end_options = Object.assign({}, date_options, {startCalendar: self.refs.calendar_start_date})
-                
-                // Initialize the start date calendar using the options defined above, including the end date limitation.
-                $(self.refs.calendar_start_date).calendar(start_options)
-
-                // Initialize the end date calendar using the options defined above, which includes the start date limitation.
-                $(self.refs.calendar_end_date).calendar(end_options)
-
-
+                // Create a new options object for the start date calendar using 'date_options'
+                $(self.refs.calendar_start_date).calendar(date_options)
+                // Create a new options object for the end date calendar using 'date_options'
+                $(self.refs.calendar_end_date).calendar(date_options)
 
                 // Initialize the start time calendar with the defined options. 
                 // This will create a time picker for the 'start time' field.
@@ -641,7 +650,6 @@
             return new Date(Date.parse(date))
         }
 
-
         self.edit = function (index) {
             self.selected_phase_index = index
             var phase = self.phases[index]
@@ -649,11 +657,12 @@
             self.phase_public_data = [phase.public_data]
             self.phase_starting_kit = [phase.starting_kit]
 
-
             self.update()
             set_form_data(phase, self.refs.form)
             $(self.refs.auto_migrate).prop('checked', _.get(phase, 'auto_migrate_to_this_phase', false))
             self.refs.hide_output.checked = phase.hide_output
+            self.refs.hide_prediction_output.checked = phase.hide_prediction_output
+            self.refs.hide_score_output.checked = phase.hide_score_output
 
             // Setting description in markdown editor
             self.simple_markdown_editor.value(self.phases[index].description || '')
@@ -795,6 +804,12 @@
                     data.end_time = "00:00"
                 }
                 data.end = self.formatDateTo_Y_m_d_T_H_M_S(data.end_date + " " + data.end_time)
+
+                // Check: start date must not be after end date
+                if (new Date(data.start) > new Date(data.end)) {
+                    toastr.error("End date cannot be earlier than the start date. Please choose a valid date range.")
+                    return
+                }
             }else{
                 // end date is set to null if it is not selected because it is optional in the form
                 data.end = null
@@ -812,6 +827,8 @@
             }
             data.auto_migrate_to_this_phase = $(self.refs.auto_migrate).prop('checked')
             data.hide_output = self.refs.hide_output.checked
+            data.hide_prediction_output = self.refs.hide_prediction_output.checked
+            data.hide_score_output = self.refs.hide_score_output.checked
             _.forEach(number_fields, field => {
                 let str = _.get(data, field)
                 if (str) {
diff --git a/version.json b/version.json
index 0660fe36f..359f74c53 100644
--- a/version.json
+++ b/version.json
@@ -1,6 +1,6 @@
 {
-  "tag_name": "1.18.0",
-  "release_name": "1.18.0",
-  "published_at": "2025-04-09T13:23:50Z",
-  "html_url": "https://github.com/codalab/codabench/releases/tag/1.18.0"
+  "tag_name": "1.19.0",
+  "release_name": "1.19.0",
+  "published_at": "2025-05-15",
+  "html_url": "https://github.com/codalab/codabench/releases/tag/1.19.0"
 }