Error connecting to the Apple ID server

I've just upgraded to Catalina on my iMac, and now I am unable to connect to the Apple ID server. I have done some of applicable suggestions seen on the net, and nothing appears to be working to resolve the issue. Reboot--nada. Changing the date/time--nada. Logging out--doesn't work because it needs to log out of Find My Mac and cannot because it cannot connect to the Apple ID Server. Looking for a resolution that works instead of the same rehashed suggestions.