A. 1. Ensure that you are saving your progress regularly within the app. Look for a 'Save' button or an auto-save feature in the settings. 2. Check if there is a cloud backup option in the app settings. Enable it to save your progress online, which can help restore it after a restart. 3. If the app has a 'Restore' feature, use it after restarting to recover any lost progress.

B. 1. Try to avoid force-closing the app. Instead, use the home button to minimize it. 2. If the app crashes frequently, consider uninstalling and reinstalling it to see if that resolves the issue.