Lycarii Please do a clean uninstall and reinstall of Sims 4 and the EA App, as described in the accepted solution of this thread:
[CURRENT ISSUE] Sims 4 DLC shows as installed, won't load in-game | EA Forums - 11831673
Anchors don't work on this site at the moment, so use ctrl-F to search for revo and go from there.
When reinstalling the game, please use a new folder you create for this purpose, as described, and make sure it's on the root level of the drive of your choice. And if you've been using ReShade or GShade, don't reinstall it yet.