A friend of mine recently registered the domain (elrant.team) on behalf of her team, in which I also take place.
Checking the admin console, there have been 3 people registered their machines in the organization so far, with all of them having app installation failures.
But when it comes to me, as soon as I add the work account, I'm disconnected with the following notification, with no traces of my laptop to be seen in the admin console.

I wonder if this is happening because I have my school account (erdogan.edu.tr) added on this machine already. I want to format this laptop and try to go through OOBE only with the work account, but I have ongoing assignments and important data, not to mention my NVMe disk health being at 61%, which also keeps me from doing so.
As a troubleshooting attempt, I suggest to try to do what I mentioned - backing up data, formatting the machine and going through OOBE using work account. If it's reported to work, then I'll also do the same.
Thanks from now!