Can't change my finger

hello guys !

i have 1 resto dudu , but i can't change my finger in Icecrown Citadel but i can change it with my warrior
if there is any problem please tell me

https://imgur.com/kaKUOV1 (My Warrior)
https://imgur.com/ooLX3Zt (My Druid)

Write an in-game ticket.