Origin wont let me play titanfall 2

[TwirlyPelican]

I bought Titanfall 2 on origin a while ago, and I came back to play it today and it won't let me. I apparently need to use a product code to link it to my origin account before I can actually play, but I haven't been able to locate it. I haven't gotten an email or anything, so I'm not sure what to do. Please Help.