Do you have Mods or CC, or did you ever have them, in your game?
Please check if this bug report seem like your issue. If they do you can add your information there and 'me too' them:
SheriGR – I don’t work for EA
@Christineeve You're very welcome!
Could anyone who has seen this issue share a save file, to help us investigate? Thanks so much!
January - last edited January
I made the affected sim drop out, so she's no longer suspended. Would my save still be useful?
I had been having the same problem, despite I temporailly removed all mods, but the result were still the same. Could not enroll sims after suspension.
I don't work or have any association with EA. I give advice to the best of my knowledge and cannot be held responsible for any damage done to your computer/game.
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I am a rotational player, I have several households with Sims in College from home as I find it too glitchy in dorms, anyway, this one Sim had A+ GPA and signed up for new term, as I do with all my Sims in college, I made sure all course work was completed and turned in (Term Papers, presentations, etc) and that they've gone to classes a time or two before moving to next household, sometimes when I get back to the family in question its time for next term, no issues... not this time, my other's are progressing normally but for some reason this guy is suspended with C+ GPA and says cannot enroll for 0 days... and its said that through 3 others graduating.... Needless to say this is pissing me off, I do a lot of prep work building up my Sims capabilities before I even enroll them. Sim in question is at 8 of 12 terms and I do not want to drop him out and start over. I've tried updating and repairing game, clearing cache etc... he is still suspended!