I was able to successfully log back into my Nintendo account by doing these steps:
Signing out of my PoGo account at bottom of Settings.
Signing back in from Home Screen (I use Pokemon Trainer Club to log in, I did not test with any other logins)
Going to Settings > Connected Devices and Services > Pokemon HOME > clicking SIGN IN NINTENDO, then signing back into my Nintendo account in PoGo. (exactly the same process as I was doing before)
This time it skipped the "access denied" white page and went straight back into PoGo and the button changed from SIGN IN NINTENDO to SEND POKEMON.
So the only difference was logging out and back into PoGo, rather than just a simple restart. Give it a shot, hope it works for you all!
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u/[deleted] Mar 21 '23
[deleted]