A. If the app is rebooting frequently, try uninstalling and reinstalling the app. This can clear any corrupted data that may be causing the issue. To do this, press and hold the app icon until it wiggles, then tap the 'X' to delete it. Reinstall it from the App Store.

B. Check your iPhone's storage. If your device is low on storage, it can cause apps to behave erratically. Go to Settings > General > iPhone Storage to see if you need to free up space.