Cant Advance Class

[ping_chin]

Date and Time(Please, specify the timezone) :3:19AM 12/8/2559(acually since yesterday morning)
Server Name:Varena

Team Name:Meliodarus

Character Name:Meliodas

Bug Description :
I try to advance to Monk C2 but there is no advance button, no advance on other class either

Steps to reproduce the issue :

1. log in to the game
2. Try to advance class
3. Cant
4. try to not cries
   5)Cry in the corner
5. Tell myself i dont care and dont want to play this game anymore
   7)after a bunch of hour
6. return to number 1

Screenshots / Video :

[Nirimetus]

Are you using Addons? If yes, try removing them, they still outdated as far as i remember and can cause random issues.