A. 1. Restart the app by closing it completely and reopening it. This can often resolve temporary glitches. 2. If the back button is still unresponsive, try navigating using the main menu instead of the back button.

B. 1. Check for app updates in the App Store, as developers may have fixed this issue in a newer version. 2. If the problem persists, consider uninstalling and reinstalling the app.