He says not supported device


My English is not good enough to find a solution effectively, please help me Thank you, the watch is the Chinese mainland version, does it have anything to do with this?

I found that when I clicked “run on device”, it had about a second of time that wasn’t greyed out and could be clicked, and yes, I was in a race against time

were you able to click and run within that time?

Yes, I don’t know what the reason is, anyway, between that 0.5-1s (clickable state) I clicked and successfully downloaded and installed