A. 1. Force close the app: Swipe up from the bottom of the screen (or double-click the home button) to see all open apps. Swipe up on Adverts.ie to close it completely. Then, reopen the app. 2. Update iOS: Go to Settings > General > Software Update to check if your iPhone is running the latest version of iOS. If not, update it as compatibility issues can cause crashes.

B. 3. Reinstall the app: Delete Adverts.ie by pressing and holding the app icon until it wiggles, then tap the 'X'. Reinstall it from the App Store to ensure you have the latest version.