Greenshift Stopped working

Hello

I have been using lugin and everything worked just fine.
Suddenly it stopped. When I try to edit homepage, it just spins and never shows any kind of menus. IS it any kind of know problem? Bytheway I use your paid plugin, and can not log in your system, as I purchased plugin straight from rehub theme menus, so I do not have any account with you.

Help would be greatly appreciated