error connecting to the apple id server
I can't login to iCloud due to "There is an error connecting to the apple id server".
MacBook Pro 2017 Big Sur
It has only occurred since I upgraded to Big Sur
I have tried all the suggestions that outlined here https://macreports.com/verification-failed-there-was-an-error-connecting-to-the-apple-id-server-fix/
But still the problem exists.
I also cannot get access to the App Store; all I get is a white tab with nothing not even a spinning beach ball.
I can visit appleid.apple.com and enter my details but still no access to iCloud or App Store.
Can anyone help?
Thanks in advance
MacBook Pro 13″, macOS 11.0