watch faces not showing up in phone app or on watch

Thanks for the info there. I still wasn't able to get mine to work, even after a full erasure and setup as new devices. I discovered it was an issue with iCloud Photos and syncing the photos (for watch faces) to my watches. By default, it selected 100 photos from Favorites. I found that if I turned that off, reduced it to 25, or opened the photos app and waited until they all synced that things would work.

Hopefully this helps someone out in the future. I did let Apple know.

I'm having the same issue. I've tried numerous times to unpair and repair both restoring from backup and setting up as a new watch. Prior to that I tried power cycling all of the devices and resetting network settings. I am resorting to setting up my iPhone again, which is incredibly frustrating.

Power cycling the watch and phone didn’t fix it in my case.

for me what did was adding a new watch face to my list. When I did that, the rest of my watch face suddenly reappeared and everting showed again.

This just happened to me after pearing my Apple Watch 6 with my new iPhone 12 pro that was previously paired with an iPhone 11 Pro. It resolved after I power cycled the watch.