The most common reason is that the DragonFable team detected illegal gameplay activity during your session. Using cheats, hacks, trainers, or other third-party programs violates the Game Rules and Terms and Conditions.
You can still log into your game account and play DragonFable if your character page is disabled or you have a Cheater Mark. The Cheater Mark does not affect your account or character and cannot be removed.
If you have additional questions, please contact Artix Support.