Sims 3 Ambitions wont play

I got the Sims 3 Ambitions pc download on the Origin website. I downloaded it and installed it on Origin client but for some reason it wont let me play it. Every other Sims 3 game I have works fine but this one just wont even come up. It's like the game isn't even there. I tried to delete and then reinstall it but Origin client wont let me reinstall. How do I fix this mess? Help me please.

-H.