Sim can’t enroll for more courses at this time.... university bug?

Hello! I have a similar issue but my sim was not from the Gallery, I had a sim who had gotten an acceptance letter, but then I had him drop out so I could move him to a different dorm. Instead of waiting for the next term I tried using the cheat to automatically enroll him but every time I try that, I choose his degree path etc, it takes me to the correct dorm I chose, but it doesn't give him any classes under the career tab. It only says "Join a Career" and when I click that it thinks hes dropping out of uni again... so I do not think this is an issue with the gallery but I could be wrong, however I would like to know if there is a way to fix this