Single expansion pack is not working but others do

Hello, i have been having this problem for over two weeks now.. I bought new gaming PC and wanted to install my Sims 4 into it.. I have a lot of packs (stuff, game, expansion etc) i paid for every single one and every single one is working except ''Seasons''. I installed and uninstalled the game twice in hope it would fix it but nothing works.. Some of my packs are from Steam but Seasons inself are from EA.. I cannot click on anything if i wanna fix my content.. The only thing i can do on EA is ''Manage my add-ons'' and it does literally nothing.. It only shows how many i have and if i have them downloaded.. But in that list it says my Seasons are downloaded but when i launch the game it is not there.. It is my favourite pack and for my luck it does not work.. I really need help because i am desperate here.