I apologize for this inconvenience. This may be because you had teleport to either Burthorpe, Warriors Guild or Lunar Isle. These areas of the game currently are known to null peoples accounts as of yesterday's update and we suggest avoiding these areas until further notice. Our development team is working to fix this issue as soon as possible. The staff team is also working to unull everyone's account currently. Thank you for your patience as we work out these issues.