diff --git a/polylan_submitter/polylan_submitter/settings.py b/polylan_submitter/polylan_submitter/settings.py
index 2998408..8861d84 100644
--- a/polylan_submitter/polylan_submitter/settings.py
+++ b/polylan_submitter/polylan_submitter/settings.py
@@ -155,7 +155,7 @@ AANDT_API_BASE_URL = os.environ.get("AANDT_API_BASE_URL", "https://polylan.ch")
 
 # Base URL of this site, used to build submission links pushed back to the
 # legacy AAndT match messages (see submissions.services.aandt_sync)
-SUBMITTER_BASE_URL = os.environ.get("SUBMITTER_BASE_URL", "http://127.0.0.1:7777")
+SUBMITTER_BASE_URL = os.environ.get("SUBMITTER_BASE_URL", "http://localhost:7777")
 
 # File Upload Settings
 MEDIA_URL = "/media/"
diff --git a/polylan_submitter/submissions/services/aandt_client/models/match.py b/polylan_submitter/submissions/services/aandt_client/models/match.py
index 953ae9c..40fbbd6 100644
--- a/polylan_submitter/submissions/services/aandt_client/models/match.py
+++ b/polylan_submitter/submissions/services/aandt_client/models/match.py
@@ -31,7 +31,7 @@ class Match:
         rounds_count (int | Unset):
         use_points (bool | Unset):
         points_are_positions (bool | Unset):
-        multiround_modes (MatchMultiroundModes | Unset):
+        multiround_modes (MatchMultiroundModes | None | Unset):
         multiround_modes_display (None | str | Unset):
         creation_date (str | Unset):  Example: 2026-08-01 10:00:00+00:00.
         playing_date (str | Unset):
@@ -49,7 +49,7 @@ class Match:
     rounds_count: int | Unset = UNSET
     use_points: bool | Unset = UNSET
     points_are_positions: bool | Unset = UNSET
-    multiround_modes: MatchMultiroundModes | Unset = UNSET
+    multiround_modes: MatchMultiroundModes | None | Unset = UNSET
     multiround_modes_display: None | str | Unset = UNSET
     creation_date: str | Unset = UNSET
     playing_date: str | Unset = UNSET
@@ -78,9 +78,13 @@ class Match:
 
         points_are_positions = self.points_are_positions
 
-        multiround_modes: str | Unset = UNSET
-        if not isinstance(self.multiround_modes, Unset):
+        multiround_modes: None | str | Unset
+        if isinstance(self.multiround_modes, Unset):
+            multiround_modes = UNSET
+        elif isinstance(self.multiround_modes, MatchMultiroundModes):
             multiround_modes = self.multiround_modes.value
+        else:
+            multiround_modes = self.multiround_modes
 
         multiround_modes_display: None | str | Unset
         if isinstance(self.multiround_modes_display, Unset):
@@ -172,12 +176,24 @@ class Match:
 
         points_are_positions = d.pop("points_are_positions", UNSET)
 
-        _multiround_modes = d.pop("multiround_modes", UNSET)
-        multiround_modes: MatchMultiroundModes | Unset
-        if isinstance(_multiround_modes, Unset):
-            multiround_modes = UNSET
-        else:
-            multiround_modes = MatchMultiroundModes(_multiround_modes)
+        def _parse_multiround_modes(
+            data: object,
+        ) -> MatchMultiroundModes | None | Unset:
+            if data is None:
+                return data
+            if isinstance(data, Unset):
+                return data
+            try:
+                if not isinstance(data, str):
+                    raise TypeError()
+                multiround_modes_type_1 = MatchMultiroundModes(data)
+
+                return multiround_modes_type_1
+            except (TypeError, ValueError, AttributeError, KeyError):
+                pass
+            return cast(MatchMultiroundModes | None | Unset, data)
+
+        multiround_modes = _parse_multiround_modes(d.pop("multiround_modes", UNSET))
 
         def _parse_multiround_modes_display(data: object) -> None | str | Unset:
             if data is None:
diff --git a/polylan_submitter/submissions/services/aandt_openapi.yaml b/polylan_submitter/submissions/services/aandt_openapi.yaml
index ec5e190..46f3df3 100644
--- a/polylan_submitter/submissions/services/aandt_openapi.yaml
+++ b/polylan_submitter/submissions/services/aandt_openapi.yaml
@@ -125,6 +125,10 @@ components:
           items:
             $ref: "#/components/schemas/MatchRoundResult"
 
+    MatchMultiroundModes:
+      type: string
+      enum: [PA, PS, AP]
+
     Match:
       type: object
       properties:
@@ -146,9 +150,9 @@ components:
         points_are_positions:
           type: boolean
         multiround_modes:
-          type: string
+          allOf:
+            - $ref: "#/components/schemas/MatchMultiroundModes"
           nullable: true
-          enum: [PA, PS, AP]
         multiround_modes_display:
           type: string
           nullable: true
diff --git a/polylan_submitter/submissions/services/aandt_sync.py b/polylan_submitter/submissions/services/aandt_sync.py
index f76e1cc..26961db 100644
--- a/polylan_submitter/submissions/services/aandt_sync.py
+++ b/polylan_submitter/submissions/services/aandt_sync.py
@@ -14,11 +14,13 @@ from games.models import EventGame
 from ..models import Scope
 from .aandt_client import AuthenticatedClient
 from .aandt_client.api.default import (
+    aandt_api_infos,
     aandt_api_match_messages_set,
     aandt_api_matches,
     aandt_api_members,
 )
 from .aandt_client.models import (
+    AandtApiInfosResponse200,
     AandtApiMatchesResponse200,
     AandtApiMatchMessagesSetBody,
     AandtApiMembersResponse200,
@@ -33,6 +35,11 @@ from .aandt_client.types import Unset
 #   uvx openapi-python-client generate --path aandt_openapi.yaml --meta none \
 #       --output-path aandt_client --overwrite
 
+# AAndTInfosStatus value for "matches in progress" (see the / endpoint). Compared
+# as a plain string rather than the generated enum, whose member names
+# (VALUE_0, VALUE_1, ...) aren't stable across regenerations.
+AANDT_STATUS_IN_PROGRESS = "7inprog"
+
 
 class ScopeSyncError(Exception):
     """Raised when an EventGame cannot be synced against the AAndT API."""
@@ -43,6 +50,7 @@ class ScopeSyncResult:
     created: int = 0
     updated: int = 0
     warnings: list[str] = field(default_factory=list)
+    status: str | None = None
 
 
 _T = TypeVar("_T")
@@ -109,11 +117,16 @@ def sync_event_game_scopes(event_game: EventGame, /) -> ScopeSyncResult:
     submission page's URL pushed back as the match's player-facing message, so
     participants browsing the legacy site get a direct link here.
 
+    Scopes whose match is no longer returned by the API (deleted, or from a
+    previous AAndT run reusing the same token) are deactivated.
+
     Args:
         event_game: The EventGame to sync; must have `apibot_token` set.
 
     Returns:
-        A summary of created/updated scopes and any unresolved participants.
+        A summary of created/updated scopes and any unresolved participants,
+        plus the AAndT's current status (see `AANDT_STATUS_IN_PROGRESS`), so
+        callers can decide whether to keep polling.
 
     Raises:
         ScopeSyncError: When the EventGame has no token, or the API call fails.
@@ -124,6 +137,7 @@ def sync_event_game_scopes(event_game: EventGame, /) -> ScopeSyncResult:
     client = _client(event_game)
 
     try:
+        infos_response = aandt_api_infos.sync_detailed(client=client)
         members_response = aandt_api_members.sync_detailed(client=client)
         matches_response = aandt_api_matches.sync_detailed(client=client)
     except (httpx.HTTPError, ValueError) as exc:
@@ -134,32 +148,52 @@ def sync_event_game_scopes(event_game: EventGame, /) -> ScopeSyncResult:
         # resync this copy and regenerate.
         raise ScopeSyncError(f"Failed to reach AAndT API: {exc}") from exc
 
+    infos_parsed = infos_response.parsed
     members_parsed = members_response.parsed
     matches_parsed = matches_response.parsed
 
-    if not isinstance(members_parsed, AandtApiMembersResponse200) or not isinstance(
-        matches_parsed, AandtApiMatchesResponse200
+    if (
+        not isinstance(infos_parsed, AandtApiInfosResponse200)
+        or not isinstance(members_parsed, AandtApiMembersResponse200)
+        or not isinstance(matches_parsed, AandtApiMatchesResponse200)
     ):
         raise ScopeSyncError(
             "AAndT API returned "
-            f"{members_response.status_code.value}/{matches_response.status_code.value}"
+            f"{infos_response.status_code.value}/{members_response.status_code.value}"
+            f"/{matches_response.status_code.value}"
         )
 
+    aandt_infos = _unwrap(infos_parsed.aandt)
+    status = _unwrap(aandt_infos.status) if aandt_infos is not None else None
+
     members = _unwrap(members_parsed.members, [])
     matches = _unwrap(matches_parsed.matches, [])
 
     userids_by_member_id = _userids_by_member_id(members)
-    result = ScopeSyncResult()
+    result = ScopeSyncResult(status=status.value if status is not None else None)
     now = timezone.now()
+    synced_match_ids: set[int] = set()
 
     for match in matches:
-        created, warnings = _sync_match(event_game, client, match, userids_by_member_id, now)
+        match_id = _unwrap(match.id)
+        created, warnings = _sync_match(
+            event_game, client, match, userids_by_member_id, now
+        )
         if created is None:
             continue
+        synced_match_ids.add(match_id)
         result.created += created
         result.updated += not created
         result.warnings.extend(warnings)
 
+    (
+        Scope.objects.filter(
+            event_game=event_game, is_active=True, external_id__isnull=False
+        )
+        .exclude(external_id__in=synced_match_ids)
+        .update(is_active=False)
+    )
+
     return result
 
 
@@ -210,11 +244,13 @@ def _sync_match(
     return created, warnings
 
 
-def _push_submission_link(client: AuthenticatedClient, match_id: int, scope: Scope) -> list[str]:
+def _push_submission_link(
+    client: AuthenticatedClient, match_id: int, scope: Scope
+) -> list[str]:
     body = AandtApiMatchMessagesSetBody(
         players=(
-            "<h3>Submit your result</h3>"
-            f'<a href="{_submission_url(scope)}" target="_blank" rel="noopener">'
+            "<h2>Submit your result</h2>"
+            f'<a href="{_submission_url(scope)}" target="_blank" rel="noopener" class="btn btn-info">'
             "Submit your proof here</a>"
         ),
     )
diff --git a/polylan_submitter/submissions/tasks.py b/polylan_submitter/submissions/tasks.py
index 48f3ff0..73f896e 100644
--- a/polylan_submitter/submissions/tasks.py
+++ b/polylan_submitter/submissions/tasks.py
@@ -1,11 +1,20 @@
+from datetime import timedelta
+
 from django.tasks import task
+from django.utils import timezone
 from games.models import EventGame
 from submissions.models import ImageCrop, SubmissionFile, OCRStatus
-from submissions.services.aandt_sync import sync_event_game_scopes
+from submissions.services.aandt_sync import (
+    AANDT_STATUS_IN_PROGRESS,
+    sync_event_game_scopes,
+)
 
 from PIL import Image
 import pytesseract
 
+# How often to repoll an EventGame's AAndT while it's still "in progress".
+SCOPE_SYNC_REPOLL_INTERVAL = timedelta(seconds=15)
+
 
 def _process_ocr_file(obj, file, crop: ImageCrop | None = None) -> bool:
     if obj.ocr_status != OCRStatus.TO_PROCESS:
@@ -86,9 +95,21 @@ def sync_all_event_games_task():
 
 @task
 def sync_event_game_scopes_task(event_game_id: int):
+    """Sync an EventGame's Scopes, repolling every minute while matches are in progress.
+
+    Each run re-checks the AAndT's status (from the `/` endpoint). While it's
+    still "in progress" (`7inprog`), the task re-enqueues itself with a delay
+    instead of relying on an external scheduler; once the status moves on, it
+    simply doesn't reschedule and the loop stops.
+    """
     event_game = EventGame.objects.filter(id=event_game_id).first()
 
     if not event_game:
         return
 
-    sync_event_game_scopes(event_game)
+    result = sync_event_game_scopes(event_game)
+
+    if result.status == AANDT_STATUS_IN_PROGRESS:
+        sync_event_game_scopes_task.using(
+            run_after=timezone.now() + SCOPE_SYNC_REPOLL_INTERVAL
+        ).enqueue(event_game_id)
diff --git a/polylan_submitter/submissions/views.py b/polylan_submitter/submissions/views.py
index a217750..7d96328 100644
--- a/polylan_submitter/submissions/views.py
+++ b/polylan_submitter/submissions/views.py
@@ -14,12 +14,17 @@ def submission_home(request: HttpRequest, event_path: str, game_path: str):
     game = get_object_or_404(Game, path=game_path)
 
     scopes = (
-        Scope.objects.filter(event_game__event=event, event_game__game=game)
+        Scope.objects.filter(
+            event_game__event=event,
+            event_game__game=game,
+            is_active=True,
+        )
         if request.user.is_superuser
         else Scope.objects.filter(
             event_game__event=event,
             event_game__game=game,
             assigned_users=request.user,
+            is_active=True,
         )
     )