You have to connect by Wifi
after you turn ADB on you need to select the WiFi debugging (default is BT) after a few minutes the IP address and a bunch of other information should show up. Note the IP address and use it in the Run on Device just like you did in GWS.
You don’t need to turn WiFi on but you do need a WiFi connection.(Wear OS will connect only when needed)Samsung Watches won’t debug using BT because the Wear App doesn’t support it.
If all else fails force debugging…
Using File manager copy the address where you installed adb by default
C:\Users\USERNAME\AppData\Local\Programs\WatchFaceStudio\tools\window
(copy the address as text from file manger using right click on the address bar)
Open a command prompt
navigate to the folder address
cd C:\Users\USERNAME\AppData\Local\Programs\WatchFaceStudio\tools\window
Then type
adb connect 192.168.x.x:5555 (where 192.168.x.x is your watch’s IP address).
It may take a minute to connect or give a failure response
If you get a rejected error or something check your watch debugger settings.
Try in developer options to revoked permissions and force new acceptance. do the connect again.
select “run on device” within Watch Face Studio, your watch should show up. If it doesn’t check you watch to see if you OK’d debugging when you first connected.
If it connects but will not run on device create a new keystore in a new keystore folder
I should have a Watch 5 later this week
Envious
Ron
Samsung Developer Relations