mods not working after update

Hi @AvatarFan1996, 

you're using mods and custom content at your own risk. That's how it's always been. I haven't heard anything especially bad going on with custom content (hair, clothing, objects) so you can put those back.

Mods on the otherhand need updating with every patch. Always has been that way. Modders change something about the game code that makes it work differently and if EA changes those files to fix a bug or change something different, they are outdated and can lead to issues. Many mods have already been updated, you just need to get the newest one.

Then there's of course the mods that don't get updated and those need to be removed. Here's a list for your convenience: forums.thesims.com/en_US/discussion/863545/broken-updated-mods-dec-15 but there's so many more.

There was also some changes made that mods are auto disabled on updates if that's what you're talking about. Information about that can be found here: https://help.ea.com/en/article/mods-and-the-sims-4-game-updates/