"We noticed you have not yet redeemed.."

I got the LIVE message a few days ago, so I decided to use it, but when I logged onto Halo 4 I saw nothing different. I didn’t receive anything, so what’s the point of the code or did it just glitch out on me?

You can only access Specializations at SR-50.

What Zondia said. When you get to SR 50, you will see ALL of the specializations instead of just Operator and Wetwork. Then you can choose any of the specs instead of just OP or WK.