I have installed Endpoint Central on a couple of Macs and reset the enrollment with the root user, but one of the Macs has presented the user with this enrollment dialogue which they cannot get past. They are offsite. The Mac is in Apple Business Manager but I have unassigned this Mac to hopefully get it to log in for the user over the weekend.

How can I set up Endpoint Central so that MDM Profiles for the Mac will be delivered from the secure Gateway, and why is the enrollment not happening immediately? I looked at this Mac on Monday and only now is it behaving in this way...