I can't login to facetime/imessage
My mac OS (10.15.4) is up to date, and I've tried turning the automatic time setting on and off multiple times. I still can't login to Facetime/Imessage. Other iCloud things work fine, and I can use facetime/imessage on other devices.
I've followed the instructions here with no luck: https://support.apple.com/en-us/HT203585
MacBook Pro 15”, macOS 10.14