Solved
Mods won't show up
I downloaded a bunch of mods (Clothing and furniture only) Then a few days later, I kinda stopped playing Sims 4. Then a few days ago I wanted to open Sims 4 again. It told me I needed to update, so ...
That is not Mods but CC (Custom Content) Mods changes the behavior of the game.
You need to enable Mods and CC again in Game options | Other.
