How to solve problem with Sims 3 store bought content not showing in gameplay

I have been issues with my Sims 3 gameplay due to all my store bought items and worlds not being recognised in gameplay no matter how I install them, reinstalling the whole game, repairing the game in EA app repair option. Now I am upset because I lost access to content I have had for years and invested a lot of my money on it so please help me solve this issue ASAP