A. 1. Check alarm settings: Open the app and navigate to the alarm settings. Ensure that the alarm is set correctly with the desired time and sound. 2. Ensure Do Not Disturb is configured: If your phone is in Do Not Disturb mode, make sure that alarms are allowed to go off. Go to Settings > Sound > Do Not Disturb > Allow exceptions, and ensure alarms are included. 3. Test the alarm: Set a test alarm for a few minutes ahead to see if it goes off as expected.

B. 4. Check battery optimization settings: Go to Settings > Battery > Battery optimization, find Avrora Sleep Sounds & Stories, and set it to 'Not optimized' to ensure it can run in the background.