problem logging out of Avsim Forums

Hey, I hope somebody can help me with this issue. I can't log out of my Avsim.com account and I keep receiving an error message saying: You don't have permission to do that. Because of this, I also can neither contact the administrator or any of the Avsim staff, nor access the site's help center, and I am a registered user just trying to log out of my account when I don't need to be online. I would appreciate any suggestions you may have. 
