Tried to edit time, but each time I tried, the 15m default just moved left to 1h 50-something, then 15h EDIT: Immediate contact from dev to suggest fix... however, turned out controls to delete/edit timer are invisible in light mode. Having changed time and tested for shorter time, found out vibrate not working (yes, was toggled on in app) have uninstalled. EDIT: Vibrate still not working for me. New (pixel 6) phone.