EDIT: It was a bug.
Problem is solved at the beta version.
I customized snooze time 30m to 55m somehow when I half awake and half asleep.
I’m not using 55m of snoozing time, and it’s so uncomfortable that I can’t use 30m of snooze anymore.
Could somebody teach me how to change customized snooze time back to 30m?
I’ve already uninstalled the app and nothing changed.