Apple recently had an issue with expired certs they had to remedy. That tends to be their bottleneck now.

Yeah that just tripped me up trying to recomission a 2012 Macbook Pro.

Couldn't connect to wifi except through a password-less hotspot. Then I couldnt get online because nothing with SSL was working.

I didnt have a pen drive so I had to FTP off another machine, via my phone hotspot. We got there though!