Halo 4 specialization code reading invaild

i need help my code with the specialzation is reading invaild when i put it in xbox live told me to get on halo forum and someone would help me out im gonna need a new code or something can anyone on here help me or 343 can u contact me and help gamertag is papermaker22 thanks

So I’m sitting here with my XP capped off @ 70, no longer able to access new specializations, and meanwhile I have 35 or 40 Mountain Dew caps that mean absolutely nothing because it has been decided to Cap XP earnings while at the same time running a Double XP promotion…HMMMMMMMMM!!! I’m truly glad I waited until Halo 4 only cost $39.99 to purchase. Otherwise I may have felt like I have been taken advantage of. -DFL072 Hey everyone, they’re handing out XP in Black Ops II