Hi @eredifer and welcome to the Community forum! 
Go to the settings menu on the watch, gear icon 
Tap that and scroll down to the"System Control" There you will find Restart Shutdown and Factory Reset.
Wyze is a Toy company…they need to focus on a Core Product segment…So many issues will there products. I also use Ring in parallel and no issue…grant that Ring also went thru growing pains…but they listened…that’s what’s different with Ring vs Wyze. Watching for Ear buds, light strips, cordless vacuum.
Wyze is a startup offering cheep product. Ring is Amazon with Billions of dollars. Give them a break. You get what you pay for.
In 2013, inventor Jamie Siminoff brought his idea for a video doorbell to TV’s “Shark Tank,” hoping to find a backer for his new company . The sharks flatly rejected him. But the product, Ring , became a huge hit, and Amazon purchased his company in 2018 for over $1 billion.
Maybe once Wyze get there act together…someone will see the value in the Company to buy them out.
Exactly how we get monopolies with high prices! Monopolies with no competition (they buy them at outrageous prices). After all, if Amazon paid $1 billion for Ring, they have to recover that somehow, and they do it from you and me.
Nah, I haven’t had steps nor sleep for 10 days, restarted, reset to factory, and it still doesn’t work. And the history has not been restored. I understand not putting resources into an old product, EXCEPT, why would someone buy their other products if they are just going to stop supporting them?
Welcome to the Forum, @mfnwyz! 
Some of us haven’t seen data sync since April: No more data after Apr 1 for watch 47c. I don’t know why your issue began 10 days before you posted or why several of us saw this issue begin on the same date months ago, but I’ve had unresolved tickets and no solution so far.