Re: Sims 3 Late Night doesn't show up in my installed games on launcher

SimLover1225  Did you buy Late Night through EA or from a third party?  If the latter, you might have received a bad code, which can sometimes work at first but not later.

If you did buy from EA, please login to ea.com, click Account Settings > Order History, and check the status of the Late Night purchase.  Let me know what it says: Completed, Processing, or Failed.