Can someone help me?I've been promoted from healer to priest. When I try go from expert light to master it wont let me click on my level 7 status to upgrade in the dialogue box? Is this a glitch or does anyone know are there ways around this?

I'm level 7 in the skills page and the number is even blue so I'm ready to be promoted to master but it's not letting me. So frustrating!!! Aaaaggjj