Re: Sims 3 Barnacle Bay and Dragon Valley Installed but Not Appearing in Game

Solved it, for anyone else who comes across this problem and needs help: https://answers.ea.com/t5/Technical-Issues-PC/FAQ-The-Sims-3-Store/td-p/333394

That link helped me to solve it and it has some other problems on there too that you could potentially have. Scroll down to "I installed my Store Content but it's not showing up in my game". If the link doesn't work for some reason here are the steps: 

1.) Go into your computer files, then go to "documents" > "electronic arts" > "The Sims 3"

2.) Drag out and move the "DCCache" folder out and onto your home screen desktop

3.) Click (or double click) and open the "InstalledWorlds" folder and delete all files in that folder

4.) Go back and click (or double click) the ""DCBackup" and delete everything in there. 

5.) Reinstall everything from the sims 3 store using launcher (basically install the way you originally did) but do not install everything at once. First install worlds, then lots, then sets, and then individual items.