Can Someone please help me with my codes?

For some strange reason, none of my halo 4 codes seem to be working and yet i bought the game brand new. They all come up as invalid and I am wondering if someone can help me out?

Invalid means you are entering them incorrectly.

> For some strange reason, none of my halo 4 codes seem to be working and yet i bought the game brand new. They all come up as invalid and I am wondering if someone can help me out?

If it’s for the specialization codes,then don’t worry,they will be unlocked for everybody 2 by 2,one on the 21th,27th and whenever the next one is