Does it work with the app closed?
Yes — phone on, internet connected, alarm fires. That's it. Some phone vendors restrict custom alarm clocks. Please check out https://dontkillmyapp.com/ if you face problems.
Why did the video fail to play?
Age-restricted, private, or region-locked videos won't work. Use any regular public YouTube video and you're good. Also please check out https://dontkillmyapp.com/ if you face problems.
Alarm not triggering at all?
Three things to check: Android 12+, app overlay permission enabled, battery optimisation off for Tubzer. Also please check out https://dontkillmyapp.com/ if you face problems.
Something else?
Email support@tubzer.de or find us on Telegram.