I'm not able to customize any of my watch faces from the Samsung wear app anymore. Every time I try to customize from the phone, it just shows a loading screen forever. The issue started after the recent update to the watch. It also appears to be impacting only non-samsung phone. My wife has the same watch with S22 and is not facing issues.
Things tried so far -
1. Restarted the watch
2. Hard reset the watch
3. Uninstalled the wear app, plugin app and accessory app on the phone and hard reset the watch.
Software version - R910XXU1AVK7
Have the same problem myself, customize on watch but not on phone, hopefully get fixed soon
I found slightly newer versions of Samsung Wearable app and Watch5 Plugin in Apkmirror. Sideloading these newer versions seems to have fixed the issue for me. Samsung needs to push these updates to the play store to fix the issue for non-Samsung phones.
Sideloading is HIGHLY NOT RECOMMENDED given recent certificate leak on several major OEM's including Samsung.