I don't remember when this issue was first discovered, but I'm having trouble logging in to xcode with my Apple ID, but beta version works. (seems to be related to macOS big sur beta 11)
To submit app i need to figure this out asap. I googled and found some kind of trick.
developer.apple.com/forums/thread/100020
Because binary built with beta version couldn't upload to app store, I need to build binary with Xcode 11.7 and upload with beta.
It seems very odd but I have a no choice for now. Actually I haven't tried this way yet. If there is another problem, I will update it.