Alarm doesn't work

[Luigi3]

The title says it all. I noticed that I'm waking up late during my holidays and using Apple Watch 2 as alarm.
It just stopped working. It's showing that alarm is happening, but no sound or vibration. No matter whether Nightstand is active or not.
I tried various solutions, i.e.: https://discussions.apple.com/thread/8081768 , setting alarm via Siri, manually, changing vibrations on phone, etc. It only started to work if I had resetted the watch. But I did it yesterday and today it failed again!
The only thing I didn't try is re-pairing it again. But I'm not gonna do that, it takes too much time and such basic function should work flawlessly.
This is a giant bug and looks like Apple doesn't care at all, since I'm not the only one who's experiencing such problems.

The quality of Apple's software nowadays is abysmal.

 

[kboller07]

Have you tried toggling your ring/silent button on your iPhone? My watch won't vibrate unless the phone is on ring.

 

[Shirasaki]

I was crazy enough one day and set up an alarm to wake me up during 4am, on Watch. It worked, super well, and I woke up because of the vibration from Watch.

Apple Watch series 3 with WatchOS 4.
Maybe? Try a night when Watch is not connected to your phone and see if it will ring.

 

[Luigi3]

Have you tried toggling your ring/silent button on your iPhone? My watch won't vibrate unless the phone is on ring.

Phone ring button has no effect on Watch.

I was crazy enough one day and set up an alarm to wake me up during 4am, on Watch. It worked, super well, and I woke up because of the vibration from Watch.

Apple Watch series 3 with WatchOS 4.
Maybe? Try a night when Watch is not connected to your phone and see if it will ring.

I don't want to contrive with disconnecting watch to just enable the most basic function on watch. It used to work and now it doesn't.