Error while installing worlds

RexyStorms​  The Sims 3 launcher doesn't handle large amounts of data very well.  Trying to install multiple worlds at once counts as a large amount of data.  I don't know whether you did that the first time too, but it's possible you broke the Store installed content, in which case reinstalling it isn't going to fix it.  Instead, please install the content into a clean folder, as described here:

[Read First] Sims 3 Store guide | EA Forums - 11157679

You can move your saves and other content to the new folder once you're done.

Also the installed worlds don't show up in game when picking new game. On top of not showing in game once installed there's another issue. The installed content resets once I open the launcher again and I have to do the installation all over again. I don't understand what's going wrong. It's been so long since I've used downloadable content I don't remember how this works but I don't think I ever had this issue before. Hopefully someone can help me out so I can use these worlds in my game.