Forearm and leg armor glitched

Hi guys, has anyone seen this before? My leg and forearm armor skins won’t unlock anymore, ranking up tells me I’ve unlocked new ones but nothing new appears in the list ever

Armors are added to the armory at certain levels, and actually unlocked at later levels. Some through ranks, others through commendation completion.

New ones appear but remain locked until you complete the requirements. To be honest, I’m not too sure what you’re on about as you haven’t provided much detail/examples.