diff --git a/backend/benefit/applications/api/v1/application_views.py b/backend/benefit/applications/api/v1/application_views.py
index 869906b151..84ebf39cf8 100755
--- a/backend/benefit/applications/api/v1/application_views.py
+++ b/backend/benefit/applications/api/v1/application_views.py
@@ -71,6 +71,7 @@
     generate_application_summary_file,
     get_context_for_summary_context,
 )
+from calculator.enums import InstalmentStatus
 from common.permissions import BFIsApplicant, BFIsHandler, TermsOfServiceAccepted
 from messages.automatic_messages import send_application_reopened_message
 from messages.models import MessageType
@@ -300,6 +301,18 @@ def post_attachment(self, request, *args, **kwargs):
 
         return Response(serializer.data, status=status.HTTP_201_CREATED)
 
+    def _get_application_pks_with_instalments(self) -> List[int]:
+        return Application.objects.filter(
+            status=ApplicationStatus.ACCEPTED,
+            calculation__instalments__due_date__gte=timezone.now().date(),
+            calculation__instalments__instalment_number=2,
+            calculation__instalments__status__in=[
+                InstalmentStatus.ACCEPTED,
+                InstalmentStatus.ERROR_IN_TALPA,
+                InstalmentStatus.WAITING,
+            ],
+        )
+
     def _get_simplified_queryset(self, request, context) -> QuerySet:
         qs = self.filter_queryset(self.get_queryset())
         fields = set(context.get("fields", []))
@@ -324,7 +337,14 @@ def _get_simplified_queryset(self, request, context) -> QuerySet:
         user = self.request.user
         if hasattr(user, "is_handler") and user.is_handler():
             should_filter_archived = request.query_params.get("filter_archived") == "1"
-            qs = qs.filter(archived=should_filter_archived)
+            if should_filter_archived:
+                qs = qs.filter(archived=should_filter_archived)
+            else:
+                # Applications with second instalment are considered archived but should be included in main views
+                qs = qs.filter(
+                    Q(archived=should_filter_archived)
+                    | Q(pk__in=self._get_application_pks_with_instalments())
+                )
 
         ahjo_cases = request.query_params.get("ahjo_case") == "1"
         if ahjo_cases:
diff --git a/frontend/benefit/handler/src/components/header/Header.tsx b/frontend/benefit/handler/src/components/header/Header.tsx
index 5e2be71da6..688ff9b2d1 100644
--- a/frontend/benefit/handler/src/components/header/Header.tsx
+++ b/frontend/benefit/handler/src/components/header/Header.tsx
@@ -39,11 +39,9 @@ const Header: React.FC = () => {
       <li key="header-notifier">
         <HeaderNotifier />
       </li>
-      {process.env.NEXT_PUBLIC_SENTRY_ENVIRONMENT !== 'production' ? (
-        <li key="ahjo-mode-switch">
-          <TemporaryAhjoModeSwitch />
-        </li>
-      ) : null}
+      <li key="ahjo-mode-switch">
+        <TemporaryAhjoModeSwitch />
+      </li>
     </$HeaderCustomItems>
   );
 
diff --git a/frontend/benefit/handler/src/components/header/TemporaryAhjoModeSwitch.tsx b/frontend/benefit/handler/src/components/header/TemporaryAhjoModeSwitch.tsx
index 3f6cab116c..e849ca8cc6 100644
--- a/frontend/benefit/handler/src/components/header/TemporaryAhjoModeSwitch.tsx
+++ b/frontend/benefit/handler/src/components/header/TemporaryAhjoModeSwitch.tsx
@@ -14,9 +14,7 @@ const toggleNewAhjoMode = (isNewMode: boolean): void => {
         'Haluatko palata vanhaan koontipohjaiseen käyttöliittymään?'
       )
     : // eslint-disable-next-line no-alert
-      window.confirm(
-        'Haluatko kokeilla uutta Ahjo-integraation käyttöliittymää? Vain testiympäristöihin, älä käytä tuotannossa!'
-      );
+      window.confirm('Ota Ahjo-integraation käyttöliittymä käyttöön?');
   if (!confirm) return;
   if (!isNewMode) {
     setLocalStorageItem('newAhjoMode', '1');