Sims 3 Store Worlds Locked by EA play, doesn't show in game when downloaded
I have the sims 3 base game and all expansions and stuff packs physically that I have bought second hand over the years. I have used the sims 3 store fine previously to get the world Riverview and CAS but I couldn't register any of my packs since all the codes were used as I bought them second hand. I wanted to buy the world bundle on the EA app however I got confused on how to download after purchasing it (but realised later it was in confirmation email). So after looking at some forums, I tried to get the the one month membership for EA play hoping that would help as then I could briefly install the sims and look at the add on there. I downloaded the sims 3 from there but it didn't help and I found the answer that the codes were in the email so I cancelled the membership and uninstalled the EA app version of the sims 3 then reinstalled my physical copy so I wouldn't have to wait a month for EA to lock the game. I then went on to reinstalling everything fine but when I try reinstalling the store content it installs and downloads but doesn't show up in the game. I have tried everything I have seen on forums like uninstalling several times but it still just isn't showing up in my games yet it says downloaded everywhere I look.
I'm wondering if my store content has got linked to the sims 3 I installed from the EA app and has been locked to that version. Is that even possible? When I looked at the sims 3 store it has registered the version of the sims 3 I got from the EA app. What should I do to fix this as I don't want to keep paying for EA play membership. Should I just buy a copy of the base game from the EA app or is there anything I can do that wont cost me to rebuy what I already have?