I have a TicWatch pro. I've had it just for a few months but I'm extremely disappointed that I haven't had any resolution to the persistent notification on my watch as shown here:

- ticwatch.png (385.66 KiB) Viewed 12769 times
It's extremely annoying and clicking on the Open does nothing. However, a couple of weeks when I despairingly tried clicking the Open button, it actually opened up the Mobvoi app and asked me to sign into my Google account. When I did that, the notification changed to something like "Successfully signed into Google Play Services" and the notification went away. But after a few more days it came back and nothing I do resolves it.
Fixing this bug/issue is my biggest gripe.
Secondary to this is resolving the slow and lagging UI pretty much everywhere around the watch (especially if it's being used for the first time after it hasn't been used for a few minutes). Once it's in use, it seems to speed up.
Rest of the watch and features are great but these two really dampen what would otherwise be a really great watch.