Got a similar issue 3 days ago when activated alarm for work the next day.
Button not stayed grey, green ok.
But alarm didn't poped on the notification bar, and time untill it rings was about 30 days later, and not next morning.
Tried all presetted alarms, all broken.
Tried lot of things to resolve it, but only setting up a new alarm with same settings worked.
Then i deleted the first broken one i had, and all the others now work again.
First time in five years using uTouch that i have issue with alarm, it's the only one i have to not be late to work...