Donated Transmog doesn't work

Hello. I've donated for Monster -Ruul's Thunderfury transmog, but when I tried to do it, the NPC said that it doesn't work. Can someone please look into it!?
https://ibb.co/k592PzS

https://wowroad.info/?npc=190001 - 10000gold


https://sun9-18.userapi.com/c855128/...grpy5QQuH4.jpg