I have a previous authenticator account tied to an old job. How can I delete the profile with new devices?

I got a new iPhone, and authenticator will not let me log into it with the previously associated account b/c it was from a job I had years ago. It is saying the profile doesn’t exist, since my email access with the college has been deleted. However, new organizations are still using That authenticator account when I try to log in. This account was NOT backed up to iCloud and I am now on all new devices. I need Microsoft to look up the old account for deletion.