You can still restore backup files after paired, but just in case it was a 3rd party app, just install apps singularlyary. My daughters watch pro is working fine, she is stating she gets more battery life than my Ultra 😂. Uninstall the wear app and then re-install. It will take a few steps, but you'll get there, I know it gets frustrating when you had something working then it stops, same thing happened to me when I switched from Sky to EE, can't split the network, its always dual running, which took me over a week to get my network how I wanted. But please keep trying 🙏