Problem: Unable to get the Facer companion app back on the watch. Usually because you go to a banned country.
I have the worse situation on planet earth, That is getting my watch back working while within China. So I have figured out how to do this. Samsung is the main culprit in this, but Facer is also stinkers about their app. If you follow this , it will get Companion back on your watch.
Remove your phone sim. And reboot
Restart and connect phone to Wi-Fi WITH VPN SERVER IN THE USA.
Clear the Wearables app AND Facer data from your phone.
Open Wearables app and connect your watch. Close app.
Open Facer and go through the new setup by 1st clicking install companion.
It will think your are in the USA and the Galaxy store will open right to the Companion app.
Log into your Samsung acct and install! Done deal.
Finish by putting your sim back and reboot your phone.