I updated my watch to the One UI a couple of days ago. The redesign looks sharp, fresh and more appealing. I haven't had any issues some users are reporting. I can set alarms, make calls and send /receive texts via Android Messenger with better ease. You should see your update any day now and hopefully you have zero issues.
I have the same problem, any update received and my version is R800XXU1BSA4.
My App languaje is Spanish, may be not send the update by problems with the languaje?
Please don't update. Several reports in this community of massive battery drain. Disappointed to hear Samsung has once again messed up this update. I was about to download. Good thing I didn't.