diff --git a/README.md b/README.md
index de308f87..586a348c 100644
--- a/README.md
+++ b/README.md
@@ -11,6 +11,8 @@
 
 Developer-friendly incident response with brilliant Slack integration.
 
+<!-- markdownlint-disable MD013 MD033 -->
+
 <table>
   <tbody>
     <tr>
@@ -20,6 +22,8 @@ Developer-friendly incident response with brilliant Slack integration.
   </tbody>
 </table>
 
+<!-- markdownlint-enable MD013 MD033 -->
+
 - Collect and analyze alerts from multiple monitoring systems
 - On-call rotations based on schedules
 - Automatic escalations
diff --git a/dev/README.md b/dev/README.md
index a79b4e6e..4f5495b2 100644
--- a/dev/README.md
+++ b/dev/README.md
@@ -40,8 +40,8 @@ environment variable.
    out/disable which components are run in Docker.
 3. Open Grafana in a browser [here](http://localhost:3000/plugins/grafana-oncall-app) (login: `oncall`, password: `oncall`).
 4. You should now see the OnCall plugin configuration page. You may safely ignore the warning about the invalid
-   plugin signature. Set "OnCall backend URL" as "http://host.docker.internal:8080". When opening the main plugin page, you may also ignore warnings about version mismatch and lack of
-   communication channels.
+   plugin signature. Set "OnCall backend URL" as "http://host.docker.internal:8080". When opening the main plugin page,
+   you may also ignore warnings about version mismatch and lack of communication channels.
 5. Enjoy! Check our [OSS docs](https://grafana.com/docs/grafana-cloud/oncall/open-source/) if you want to set up Slack,
    Telegram, Twilio or SMS/calls through Grafana Cloud.
 6. (Optional) Install `pre-commit` hooks by running `make install-precommit-hook`
diff --git a/engine/apps/api/views/user_notification_policy.py b/engine/apps/api/views/user_notification_policy.py
index 08b45c01..eb168b27 100644
--- a/engine/apps/api/views/user_notification_policy.py
+++ b/engine/apps/api/views/user_notification_policy.py
@@ -15,6 +15,7 @@ from apps.auth_token.auth import PluginAuthentication
 from apps.base.messaging import get_messaging_backend_from_id
 from apps.base.models import UserNotificationPolicy
 from apps.base.models.user_notification_policy import BUILT_IN_BACKENDS, NotificationChannelAPIOptions
+from apps.mobile_app.auth import MobileAppAuthTokenAuthentication
 from apps.user_management.models import User
 from common.api_helpers.exceptions import BadRequest
 from common.api_helpers.mixins import UpdateSerializerMixin
@@ -23,7 +24,10 @@ from common.insight_log import EntityEvent, write_resource_insight_log
 
 
 class UserNotificationPolicyView(UpdateSerializerMixin, ModelViewSet):
-    authentication_classes = (PluginAuthentication,)
+    authentication_classes = (
+        MobileAppAuthTokenAuthentication,
+        PluginAuthentication,
+    )
     permission_classes = (IsAuthenticated, RBACPermission)
 
     rbac_permissions = {