504 from some mobile users?

some of my members are getting a 504 error when they try to reach my site mobile, and it is not all,,and they are not all on the same provider.. im freaking lost here!

MY SITES http://viptopia.net general social networking | http://www.rangerschat.com/ niche site
Quote · 13 Mar 2013
 
 
Below is the legacy version of the Boonex site, maintained for Dolphin.Pro 7.x support.
The new Dolphin solution is powered by UNA Community Management System.