Bad bug?

Dont you love an alarm app that youve paid for that doesnt work, even when you set an alarm? After waking up 2 hours later (as per no alarm) the app asked me if I would like to save or discard my previous session rather than actually set my alarm and tell me to wake up. Ive used this app for well over a year and its only been happening recently... Will have to stop using the app if this continues, I cant afford not waking up on time.

babygirl411 about Sleep Better - Sleep Tracker, v2.2