Can't Use Vampires Pack?

Product: The Sims 4
Platform:PC
I want to talk about something you don't mention above: Downloading Packs
How accessible is the current experience? Annoying, but OK
Summarize what in the product is difficult to use. I can't use the game pack I bought.
How is this making it more difficult? This should be obvious.
How can we reproduce this experience? N/A

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So I bought the Vampires Pack and it is saying I need to download to use. I have looked everywhere on my Sims 4 game and my Origin. I can't figure out how to do this. Help?