diff --git a/docker-app/qfieldcloud/core/admin.py b/docker-app/qfieldcloud/core/admin.py
index c67e87f70..b14d6f35d 100644
--- a/docker-app/qfieldcloud/core/admin.py
+++ b/docker-app/qfieldcloud/core/admin.py
@@ -1051,14 +1051,13 @@ class OrganizationAdmin(QFieldCloudModelAdmin):
         "email",
         "organization_owner",
         "date_joined",
+        "active_users_links",
     )
     list_display = (
         "username",
         "email",
         "organization_owner__link",
         "date_joined",
-        # "storage_usage__field",
-        "active_users",
     )
 
     search_fields = (
@@ -1068,22 +1067,31 @@ class OrganizationAdmin(QFieldCloudModelAdmin):
         "organization_owner__email__iexact",
     )
 
-    readonly_fields = ("date_joined", "storage_usage__field", "active_users")
+    readonly_fields = (
+        "date_joined",
+        "storage_usage__field",
+        "active_users_links",
+    )
 
-    list_select_related = ("organization_owner",)
+    list_select_related = ("organization_owner", "useraccount")
 
     list_filter = ("date_joined",)
 
     autocomplete_fields = ("organization_owner",)
 
-    @admin.display(description=_("Active users (last billing period)"))
-    def active_users(self, instance) -> int | None:
-        # The relation 'current_subscription_vw' is not instantiated unless the organization
-        # does have a current subscription
-        if hasattr(instance, "current_subscription_vw"):
-            return instance.current_subscription_vw.active_users_count
-        else:
-            return None
+    @admin.display(description=_("Active members"))
+    def active_users_links(self, instance) -> str:
+        persons = instance.useraccount.current_subscription.active_users
+        userlinks = "<p> - </p>"
+        if persons:
+            userlinks = "<br>".join(model_admin_url(p, p.username) for p in persons)
+        help_text = """
+        <p style="font-size: 11px; color: var(--body-quiet-color)">
+            Active members have triggererd at least one job or uploaded at least one delta in the current billing period.
+            These are all the users who will be billed -- plan included or additional.
+        </p>
+        """
+        return format_html(f"{userlinks} {help_text}")
 
     @admin.display(description=_("Owner"))
     def organization_owner__link(self, instance):
diff --git a/docker-app/qfieldcloud/subscription/models.py b/docker-app/qfieldcloud/subscription/models.py
index 3c03dbd46..3f8b1271c 100644
--- a/docker-app/qfieldcloud/subscription/models.py
+++ b/docker-app/qfieldcloud/subscription/models.py
@@ -479,11 +479,14 @@ class UpdateSubscriptionKwargs(TypedDict):
     billing_cycle_anchor_at = models.DateTimeField(null=True, blank=True)
 
     # the timestamp when the current billing period started
-    # NOTE this field remains currently unused.
+    # NOTE ignored when checking if subscription is 'current' (see `active_since and `active_until`).
+    # `current_period_since` and `current_period_until` are both either `None` or `datetime`
     current_period_since = models.DateTimeField(null=True, blank=True)
 
     # the timestamp when the current billing period ends
-    # NOTE ignored for subscription validity checks, but used to calculate the activation date when additional packages change
+    # NOTE ignored when checking if subscription is 'current' (see `active_since and `active_until`),
+    # but used to calculate the activation date when additional packages change.
+    # `current_period_since` and `current_period_until` are both either `None` or `datetime`
     current_period_until = models.DateTimeField(null=True, blank=True)
 
     # admin only notes, not visible to end users
@@ -579,6 +582,7 @@ def has_current_period(self) -> bool:
 
     @property
     def active_users(self):
+        "Returns the queryset of active users for running stripe billing period or None."
         if not self.account.user.is_organization:
             return None
 
@@ -588,17 +592,7 @@ def active_users(self):
                 self.current_period_until,
             )
 
-        assert (
-            self.current_period_since == self.current_period_until
-        ), "Both current_period _since and _until must be set."
-
-        now = timezone.now()
-        month_ago = now - timedelta(days=28)
-
-        return self.account.user.active_users(
-            month_ago,
-            now,
-        )
+        return None
 
     @property
     def active_users_count(self) -> int:
@@ -606,7 +600,7 @@ def active_users_count(self) -> int:
         if not self.account.user.is_organization:
             return 1
 
-        if not self.current_period_since or not self.current_period_until:
+        if self.active_users is None:
             return 0
 
         return self.active_users.count()