iMessage and FaceTime forgot my login, give me "error occurred during activation" message
I have an iphone SE 2020, a mac mini, and a macbook air.
The macbook air, all at a sudden, has forgotten my login for iMessage and Face Time.
If I try to enter my Apple ID and password I get "error occurred during activation"
I have Messages 12.0 and Face Time 5.0 on macOS Mojave.
The mac mini is OK.
If I go to https://www.icloud.com/settings/ I see all three of my devices listed.
It is strange that it complains about "activation" when I am just trying to log in.
Maybe that is the problem, ie, my macbook air is already "activated"???
Perhaps coincidentally, today I got this mail from Apple:
".......So far you’ve filled up over half of your free 5 GB of iCloud storage...."
Well that is not true...I store next to nothing on iCloud, and
https://www.icloud.com/settings/ shows that I have 4.78 GB free.
Could that be related?
Any suggestions would be welcome. Thanks.
Mac mini, macOS 10.14