Admin no longer has ability to see all instances

OS Name/Version: Ubuntu 20.04

Product Name/Version: AMP Release “Halimede”
v2.4.0.8, built 10/10/2022 21:18

Problem Description:

My admin account no longer has access to all instances, and when i go to change permissions I get an error saying to rebuild the account.

There is no single-user role matching this user's ID. If you have upgraded from a previous version of AMP you will need to re-create this user.

This happened after editing another user’s permissions, the rest of the users seem to be how they need to be set up, just the admin account got messed up.

How should i go about fixing this?