Re: Problem in The Sims 3 save (Sims University)

@GabGGT17  When Overwatch started aging up sims, that meant that the game was already confused about the homeworld.  No sims should age while your sim is at University, or on any kind of "vacation," so the fact that they did means the game was no longer treating this like a vacation.  Overwatch was simply catching sims that should have already aged up, according to the usual game logic, not making them age in the first place.

I think that all the problems you've described are due to the game treating University as a homeworld, with the possible exception of your sim not graduating.  And the problem here is that if you don't have a backup save, it can be difficult if not impossible to fix this issue.  However, what you can try is the Change Hometown process described here:

https://www.nraas.net/community/Traveler-FAQ#Is-it-possible-to-switch-homeworlds-permanently

Please make sure to follow the instructions exactly—missing a single step can corrupt the save.  Use "save as" to rename your save, so the current copy remains intact as a backup, before you do anything else.

I'm not sure from your description whether you can pick a place for your sim to live in Isla Paradiso, but I believe you should be able to choose somewhere to stay even without being able to edit the town.  If that's not the case, let me know; there's a workaround for that too that may or may not help.