Can't equip hands and feet

Hi, the game doesn't let me equip hands and feet, Relentless Gladiator's Scaled Gauntlets and Graves of the 7th Legion respectively. The game say that: "You cannot equip more than one of those".
Even if i take off my other feet and gloves it doesn't let me, i tryed to unstuck the character but it doesn't matter.
Pls help me solve this problem, ty.

(Wotlk Icecrown server, player Raberis)

Make sure you don't have Unique gems in sockets of those items.

Ty so much, that was the problem.