Leveling Past Master?

I can't seem to gain any experience points now. Whether I'm defeating other Masters, or classes right above me (Warrior for +90% winning percentage).

Any help?

 

To promote to warrior/hunter/defender you need to defeat 10th dans only, 5 in a row if Im not mistaken. If you lose to a single 10th dan in the process, you are demoted back to 10th dan yourself.

 

Thanks, I couldn't find that anywhere.