diff --git a/lms/djangoapps/mobile_api/notifications/views.py b/lms/djangoapps/mobile_api/notifications/views.py
index aeab8c5445c9..4c94ae576e76 100644
--- a/lms/djangoapps/mobile_api/notifications/views.py
+++ b/lms/djangoapps/mobile_api/notifications/views.py
@@ -7,7 +7,7 @@
 from ..decorators import mobile_view
 
 
-@mobile_view(is_user=True)
+@mobile_view()
 class GCMDeviceViewSet(GCMDeviceViewSetBase):
     """
     **Use Case**
diff --git a/lms/templates/instructor/edx_ace/addbetatester/push/body.txt b/lms/templates/instructor/edx_ace/addbetatester/push/body.txt
index 9070f05db483..6cd170cd5ce1 100644
--- a/lms/templates/instructor/edx_ace/addbetatester/push/body.txt
+++ b/lms/templates/instructor/edx_ace/addbetatester/push/body.txt
@@ -1,5 +1,5 @@
 {% load i18n %}
 {% autoescape off %}
 {% blocktrans %}Dear {{ full_name }}{% endblocktrans %}
-{% blocktrans %}You have been invited to be a beta tester for {{ course_name }} at {{ site_name }} by a member of the course staff.{% endblocktrans %}
+{% blocktrans %}You have been invited to be a beta tester for {{ course_name }} at {{ site_name }}.{% endblocktrans %}
 {% endautoescape %}
diff --git a/lms/templates/instructor/edx_ace/allowedenroll/push/body.txt b/lms/templates/instructor/edx_ace/allowedenroll/push/body.txt
index cddc8d38e29b..fc2e3cce4680 100644
--- a/lms/templates/instructor/edx_ace/allowedenroll/push/body.txt
+++ b/lms/templates/instructor/edx_ace/allowedenroll/push/body.txt
@@ -1,5 +1,5 @@
 {% load i18n %}
 {% autoescape off %}
 {% blocktrans %}Dear student,{% endblocktrans %}
-{% blocktrans %}You have been invited to join {{ course_name }} at {{ site_name }} by a member of the course staff.{% endblocktrans %}
+{% blocktrans %}You have been invited to join {{ course_name }} at {{ site_name }}.{% endblocktrans %}
 {% endautoescape %}
diff --git a/lms/templates/instructor/edx_ace/allowedunenroll/push/body.txt b/lms/templates/instructor/edx_ace/allowedunenroll/push/body.txt
index 5981633b96b8..b825ce1d4d18 100644
--- a/lms/templates/instructor/edx_ace/allowedunenroll/push/body.txt
+++ b/lms/templates/instructor/edx_ace/allowedunenroll/push/body.txt
@@ -1,5 +1,5 @@
 {% load i18n %}
 {% autoescape off %}
 {% blocktrans %}Dear Student,{% endblocktrans %}
-{% blocktrans %}You have been unenrolled from the course {{ course_name }} by a member of the course staff. Please disregard the invitation previously sent.{% endblocktrans %}
+{% blocktrans %}You have been unenrolled from the course {{ course_name }}. Please disregard the invitation previously sent.{% endblocktrans %}
 {% endautoescape %}
diff --git a/lms/templates/instructor/edx_ace/enrolledunenroll/push/body.txt b/lms/templates/instructor/edx_ace/enrolledunenroll/push/body.txt
index da9c3a3de00c..ce94b24f6167 100644
--- a/lms/templates/instructor/edx_ace/enrolledunenroll/push/body.txt
+++ b/lms/templates/instructor/edx_ace/enrolledunenroll/push/body.txt
@@ -1,5 +1,5 @@
 {% load i18n %}
 {% autoescape off %}
 {% blocktrans %}Dear {{ full_name }}{% endblocktrans %}
-{% blocktrans %}You have been unenrolled from {{ course_name }} at {{ site_name }} by a member of the course staff. This course will no longer appear on your {{ site_name }} dashboard.{% endblocktrans %}
+{% blocktrans %}You have been unenrolled from {{ course_name }} at {{ site_name }}. This course will no longer appear on your {{ site_name }} dashboard.{% endblocktrans %}
 {% endautoescape %}
diff --git a/lms/templates/instructor/edx_ace/enrollenrolled/push/body.txt b/lms/templates/instructor/edx_ace/enrollenrolled/push/body.txt
index 36bd69d7b72f..883f14770512 100644
--- a/lms/templates/instructor/edx_ace/enrollenrolled/push/body.txt
+++ b/lms/templates/instructor/edx_ace/enrollenrolled/push/body.txt
@@ -1,5 +1,5 @@
 {% load i18n %}
 {% autoescape off %}
 {% blocktrans %}Dear {{ full_name }}{% endblocktrans %}
-{% blocktrans %}You have been enrolled in {{ course_name }} at {{ site_name }} by a member of the course staff. This course will now appear on your {{ site_name }} dashboard.{% endblocktrans %}
+{% blocktrans %}You have been enrolled in {{ course_name }} at {{ site_name }}. This course will now appear on your {{ site_name }} dashboard.{% endblocktrans %}
 {% endautoescape %}
diff --git a/lms/templates/instructor/edx_ace/removebetatester/push/body.txt b/lms/templates/instructor/edx_ace/removebetatester/push/body.txt
index 586a9385f988..4806be929b83 100644
--- a/lms/templates/instructor/edx_ace/removebetatester/push/body.txt
+++ b/lms/templates/instructor/edx_ace/removebetatester/push/body.txt
@@ -1,5 +1,5 @@
 {% load i18n %}
 {% autoescape off %}
 {% blocktrans %}Dear {{ full_name }}{% endblocktrans %}
-{% blocktrans %}You have been removed as a beta tester for {{ course_name }} at {{ site_name }} by a member of the course staff. This course will remain on your dashboard, but you will no longer be part of the beta testing group.{% endblocktrans %}
+{% blocktrans %}You have been removed as a beta tester for {{ course_name }} at {{ site_name }}. This course will remain on your dashboard, but you will no longer be part of the beta testing group.{% endblocktrans %}
 {% endautoescape %}
diff --git a/openedx/core/djangoapps/ace_common/settings/common.py b/openedx/core/djangoapps/ace_common/settings/common.py
index 58341470ed8d..dd1d5b680763 100644
--- a/openedx/core/djangoapps/ace_common/settings/common.py
+++ b/openedx/core/djangoapps/ace_common/settings/common.py
@@ -27,27 +27,24 @@ def plugin_settings(settings):  # lint-amnesty, pylint: disable=missing-function
     settings.FEATURES['test_django_plugin'] = True
     settings.FCM_APP_NAME = 'fcm-edx-platform'
 
-    if getattr(settings, 'FIREBASE_SETUP_STATUS', None) is None:
-        settings.ACE_CHANNEL_DEFAULT_PUSH = 'push_notification'
-
-        # Note: To local development with Firebase, you must set FIREBASE_CREDENTIALS.
-        settings.FCM_APP_NAME = 'fcm-edx-platform'
-        settings.FIREBASE_CREDENTIALS = None
-
-        if firebase_app := setup_firebase_app(settings.FIREBASE_CREDENTIALS, settings.FCM_APP_NAME):
-            settings.ACE_ENABLED_CHANNELS.append(settings.ACE_CHANNEL_DEFAULT_PUSH)
-            settings.ACE_ENABLED_POLICIES.append(settings.ACE_CHANNEL_DEFAULT_PUSH)
-
-            settings.PUSH_NOTIFICATIONS_SETTINGS = {
-                'CONFIG': 'push_notifications.conf.AppConfig',
-                'APPLICATIONS': {
-                    settings.FCM_APP_NAME: {
-                        'PLATFORM': 'FCM',
-                        'FIREBASE_APP': firebase_app,
-                    },
+    settings.ACE_CHANNEL_DEFAULT_PUSH = 'push_notification'
+    # Note: To local development with Firebase, you must set FIREBASE_CREDENTIALS.
+    settings.FCM_APP_NAME = 'fcm-edx-platform'
+    settings.FIREBASE_CREDENTIALS = None
+
+    settings.FIREBASE_APP = setup_firebase_app(settings.FIREBASE_CREDENTIALS, settings.FCM_APP_NAME)
+
+    if getattr(settings, 'FIREBASE_APP', None):
+        settings.ACE_ENABLED_CHANNELS.append(settings.ACE_CHANNEL_DEFAULT_PUSH)
+        settings.ACE_ENABLED_POLICIES.append(settings.ACE_CHANNEL_DEFAULT_PUSH)
+
+        settings.PUSH_NOTIFICATIONS_SETTINGS = {
+            'CONFIG': 'push_notifications.conf.AppConfig',
+            'APPLICATIONS': {
+                settings.FCM_APP_NAME: {
+                    'PLATFORM': 'FCM',
+                    'FIREBASE_APP': settings.FIREBASE_APP,
                 },
-                'UPDATE_ON_DUPLICATE_REG_ID': True,
-            }
-            settings.FIREBASE_SETUP_STATUS = True
-        else:
-            settings.FIREBASE_SETUP_STATUS = False
+            },
+            'UPDATE_ON_DUPLICATE_REG_ID': True,
+        }
diff --git a/openedx/core/djangoapps/ace_common/settings/production.py b/openedx/core/djangoapps/ace_common/settings/production.py
index b7ac5b12db17..d3409e13f306 100644
--- a/openedx/core/djangoapps/ace_common/settings/production.py
+++ b/openedx/core/djangoapps/ace_common/settings/production.py
@@ -27,24 +27,21 @@ def plugin_settings(settings):
     settings.ACE_CHANNEL_TRANSACTIONAL_EMAIL = settings.ENV_TOKENS.get(
         'ACE_CHANNEL_TRANSACTIONAL_EMAIL', settings.ACE_CHANNEL_TRANSACTIONAL_EMAIL
     )
-    settings.FCM_APP_NAME = settings.ENV_TOKENS.get('FCM_APP_NAME', 'fcm-edx-platform')
-    settings.FIREBASE_CREDENTIALS = settings.ENV_TOKENS.get('FIREBASE_CREDENTIALS', {})
+    settings.FCM_APP_NAME = settings.ENV_TOKENS.get('FCM_APP_NAME', settings.FCM_APP_NAME)
+    settings.FIREBASE_CREDENTIALS = settings.ENV_TOKENS.get('FIREBASE_CREDENTIALS', settings.FIREBASE_CREDENTIALS)
 
-    if getattr(settings, 'FIREBASE_SETUP_STATUS', None) is None:
-        if firebase_app := setup_firebase_app(settings.FIREBASE_CREDENTIALS, settings.FCM_APP_NAME):
-            settings.ACE_ENABLED_CHANNELS.append(settings.ACE_CHANNEL_DEFAULT_PUSH)
-            settings.ACE_ENABLED_POLICIES.append(settings.ACE_CHANNEL_DEFAULT_PUSH)
+    settings.FIREBASE_APP = setup_firebase_app(settings.FIREBASE_CREDENTIALS, settings.FCM_APP_NAME)
+    if settings.FIREBASE_APP:
+        settings.ACE_ENABLED_CHANNELS.append(settings.ACE_CHANNEL_DEFAULT_PUSH)
+        settings.ACE_ENABLED_POLICIES.append(settings.ACE_CHANNEL_DEFAULT_PUSH)
 
-            settings.PUSH_NOTIFICATIONS_SETTINGS = {
-                'CONFIG': 'push_notifications.conf.AppConfig',
-                'APPLICATIONS': {
-                    settings.FCM_APP_NAME: {
-                        'PLATFORM': 'FCM',
-                        'FIREBASE_APP': firebase_app,
-                    },
+        settings.PUSH_NOTIFICATIONS_SETTINGS = {
+            'CONFIG': 'push_notifications.conf.AppConfig',
+            'APPLICATIONS': {
+                settings.FCM_APP_NAME: {
+                    'PLATFORM': 'FCM',
+                    'FIREBASE_APP': settings.FIREBASE_APP,
                 },
-                'UPDATE_ON_DUPLICATE_REG_ID': True,
-            }
-            settings.FIREBASE_SETUP_STATUS = True
-        else:
-            settings.FIREBASE_SETUP_STATUS = False
+            },
+            'UPDATE_ON_DUPLICATE_REG_ID': True,
+        }
diff --git a/openedx/core/djangoapps/ace_common/utils.py b/openedx/core/djangoapps/ace_common/utils.py
index adf5586dc449..508ac4033cd1 100644
--- a/openedx/core/djangoapps/ace_common/utils.py
+++ b/openedx/core/djangoapps/ace_common/utils.py
@@ -15,6 +15,11 @@ def setup_firebase_app(firebase_credentials, app_name='fcm-app'):
     except ImportError:
         log.error('Could not import firebase_admin package.')
         return
+
     if firebase_credentials:
-        certificate = firebase_admin.credentials.Certificate(firebase_credentials)
-        return firebase_admin.initialize_app(certificate, name=app_name)
+        try:
+            app = firebase_admin.get_app(app_name)
+        except ValueError:
+            certificate = firebase_admin.credentials.Certificate(firebase_credentials)
+            app = firebase_admin.initialize_app(certificate, name=app_name)
+        return app
diff --git a/requirements/edx/base.txt b/requirements/edx/base.txt
index f3c200ba490c..6ae34281bc2b 100644
--- a/requirements/edx/base.txt
+++ b/requirements/edx/base.txt
@@ -4,7 +4,7 @@
 #
 #    make upgrade
 #
--e git+https://github.com/jazzband/django-push-notifications.git@906fe52058bad36b6af2bb292fdb9292ccaa94e5#egg=django_push_notifications
+-e git+https://github.com/jazzband/django-push-notifications.git@0f7918136b5e6a9aec83d6513aad5b0f12143a9f#egg=django_push_notifications
     # via -r requirements/edx/github.in
 -e git+https://github.com/raccoongang/edx-ace.git@mob-develop#egg=edx_ace
     # via
@@ -567,7 +567,7 @@ fastavro==1.9.4
     # via openedx-events
 filelock==3.14.0
     # via snowflake-connector-python
-firebase-admin==5.0.0
+firebase-admin==6.5.0
     # via edx-ace
 frozenlist==1.4.1
     # via
@@ -946,6 +946,7 @@ pyjwt[crypto]==2.8.0
     #   edx-drf-extensions
     #   edx-proctoring
     #   edx-rest-api-client
+    #   firebase-admin
     #   pylti1p3
     #   snowflake-connector-python
     #   social-auth-core
diff --git a/requirements/edx/coverage.txt b/requirements/edx/coverage.txt
index e150dc3fe238..e41cc829fa37 100644
--- a/requirements/edx/coverage.txt
+++ b/requirements/edx/coverage.txt
@@ -8,7 +8,7 @@ chardet==5.2.0
     # via diff-cover
 coverage==7.5.1
     # via -r requirements/edx/coverage.in
-diff-cover==9.0.0
+diff-cover==7.7.0
     # via -r requirements/edx/coverage.in
 jinja2==3.1.4
     # via diff-cover
diff --git a/requirements/edx/development.txt b/requirements/edx/development.txt
index 50593bfcfe75..bcac0471454f 100644
--- a/requirements/edx/development.txt
+++ b/requirements/edx/development.txt
@@ -4,7 +4,7 @@
 #
 #    make upgrade
 #
--e git+https://github.com/jazzband/django-push-notifications.git@906fe52058bad36b6af2bb292fdb9292ccaa94e5#egg=django_push_notifications
+-e git+https://github.com/jazzband/django-push-notifications.git@0f7918136b5e6a9aec83d6513aad5b0f12143a9f#egg=django_push_notifications
     # via
     #   -r requirements/edx/doc.txt
     #   -r requirements/edx/testing.txt
@@ -351,7 +351,7 @@ defusedxml==0.7.1
     #   ora2
     #   python3-openid
     #   social-auth-core
-diff-cover==9.0.0
+diff-cover==7.7.0
     # via -r requirements/edx/testing.txt
 dill==0.3.8
     # via
@@ -926,7 +926,7 @@ filelock==3.14.0
     #   snowflake-connector-python
     #   tox
     #   virtualenv
-firebase-admin==5.0.0
+firebase-admin==6.5.0
     # via
     #   -r requirements/edx/doc.txt
     #   -r requirements/edx/testing.txt
@@ -1651,6 +1651,7 @@ pyjwt[crypto]==2.8.0
     #   edx-drf-extensions
     #   edx-proctoring
     #   edx-rest-api-client
+    #   firebase-admin
     #   pylti1p3
     #   snowflake-connector-python
     #   social-auth-core
diff --git a/requirements/edx/doc.txt b/requirements/edx/doc.txt
index e9e2d71382bc..a6d080e9e2df 100644
--- a/requirements/edx/doc.txt
+++ b/requirements/edx/doc.txt
@@ -4,7 +4,7 @@
 #
 #    make upgrade
 #
--e git+https://github.com/jazzband/django-push-notifications.git@906fe52058bad36b6af2bb292fdb9292ccaa94e5#egg=django_push_notifications
+-e git+https://github.com/jazzband/django-push-notifications.git@0f7918136b5e6a9aec83d6513aad5b0f12143a9f#egg=django_push_notifications
     # via -r requirements/edx/base.txt
 -e git+https://github.com/raccoongang/edx-ace.git@mob-develop#egg=edx_ace
     # via -r requirements/edx/base.txt
@@ -653,7 +653,7 @@ filelock==3.14.0
     # via
     #   -r requirements/edx/base.txt
     #   snowflake-connector-python
-firebase-admin==5.0.0
+firebase-admin==6.5.0
     # via
     #   -r requirements/edx/base.txt
     #   edx-ace
@@ -1137,6 +1137,7 @@ pyjwt[crypto]==2.8.0
     #   edx-drf-extensions
     #   edx-proctoring
     #   edx-rest-api-client
+    #   firebase-admin
     #   pylti1p3
     #   snowflake-connector-python
     #   social-auth-core
diff --git a/requirements/edx/github.in b/requirements/edx/github.in
index 7729b94e1ca3..0d81f31a051d 100644
--- a/requirements/edx/github.in
+++ b/requirements/edx/github.in
@@ -92,4 +92,4 @@
 -e git+https://github.com/anupdhabarde/edx-proctoring-proctortrack.git@31c6c9923a51c903ae83760ecbbac191363aa2a2#egg=edx_proctoring_proctortrack
 
 -e git+https://github.com/raccoongang/edx-ace.git@mob-develop#egg=edx_ace
--e git+https://github.com/jazzband/django-push-notifications.git@906fe52058bad36b6af2bb292fdb9292ccaa94e5#egg=django_push_notifications
+-e git+https://github.com/jazzband/django-push-notifications.git@0f7918136b5e6a9aec83d6513aad5b0f12143a9f#egg=django_push_notifications
diff --git a/requirements/edx/testing.txt b/requirements/edx/testing.txt
index 4027fa29f3f2..ef44f63029db 100644
--- a/requirements/edx/testing.txt
+++ b/requirements/edx/testing.txt
@@ -4,7 +4,7 @@
 #
 #    make upgrade
 #
--e git+https://github.com/jazzband/django-push-notifications.git@906fe52058bad36b6af2bb292fdb9292ccaa94e5#egg=django_push_notifications
+-e git+https://github.com/jazzband/django-push-notifications.git@0f7918136b5e6a9aec83d6513aad5b0f12143a9f#egg=django_push_notifications
     # via -r requirements/edx/base.txt
 -e git+https://github.com/raccoongang/edx-ace.git@mob-develop#egg=edx_ace
     # via -r requirements/edx/base.txt
@@ -267,7 +267,7 @@ defusedxml==0.7.1
     #   ora2
     #   python3-openid
     #   social-auth-core
-diff-cover==9.0.0
+diff-cover==7.7.0
     # via -r requirements/edx/coverage.txt
 dill==0.3.8
     # via pylint
@@ -707,7 +707,7 @@ filelock==3.14.0
     #   snowflake-connector-python
     #   tox
     #   virtualenv
-firebase-admin==5.0.0
+firebase-admin==6.5.0
     # via
     #   -r requirements/edx/base.txt
     #   edx-ace
@@ -1240,6 +1240,7 @@ pyjwt[crypto]==2.8.0
     #   edx-drf-extensions
     #   edx-proctoring
     #   edx-rest-api-client
+    #   firebase-admin
     #   pylti1p3
     #   snowflake-connector-python
     #   social-auth-core