Forearm and Leg Armor Won't Unlock Anymore!

I’m already on my second specialization and my leg and forearm armor is completely glitched - it won’t unlock new armor no matter what! I tried contacting 343 but they have ignored me. How can I continue playing when the metagame is completely broken for me?

Unfortunately, I really like H4 and that’s why I stick around but this is unacceptable.

I am having the same issue did you ever get a fix?