Fenix 7 alarm suddenly doesn't go off / randomly stopped working

I have a daily alarm at 7 that goes off - no sound, just vibrate so I don't wake my partner. I loved it until it stopped working randomly. Can't think of anything that could have possibly instigated. Haven't downloaded anything new. Full battery. No changes to alarm (checked a million times, alarm is daily and set to ON) Its failed to go off two days in a row now. 

Sorry but it is a bit ridiculous that on a $700 watch such a basic feature doesn't work properly. Now I have to go back to using my loud phone alarm because I can't trust the device to wake me up in time for work. 

Any solutions for this?