I have a live mobile app that needs several quick fixes and small feature tweaks: • User notifications already appear correctly, but inside the notification settings screen I need an Add / Delete option so users can manage their own notices. • The Info button is presently inert. It must finally “Do” what it was meant to—react when tapped and complete its intended action rather than sitting idle. • In the admin area an unused “Donut” button slipped in during a previous update. Please remove it cleanly from both UI and code. • I want you to confirm whether a developer-level back door still exists. If any direct access remains, close it and leave only the standard, authorised paths. • Google sign-in is integrated but currently fails. Diagnose the cause, update the OAuth flow if necessary, and get users logging in with their Google accounts again without errors. • When customers save an address, the city field should persist and be visible in the admin panel. At the moment that value is lost; make sure it stores and displays every time. • Finally, the solution must run strictly as an app. If someone tries to reach it from a regular browser, the experience should be blocked or redirected so the features stay app-only. Deliverables: 1. Updated source code and any config files. 2. A brief change log highlighting where you touched the code. 3. APK/IPA (or TestFlight build) for verification. 4. Confirmation that every item above has been tested and works on both Android and iOS where applicable. The project is small but important, so clear, well-commented commits and fast turnaround will be appreciated.