Help!! How to fix 502 Bad Gatway, its frustrating and I can't open any menu!

Hi,
How can I solve 502 Bad gateway on Ipage Sever? I keep getting this each time I want to navigate to any menu in my WP admin area. The server is ipage...this is frustrating
url://http://callmemum.com/callmemum1
error link: http://callmemum.com/callmemum1/wp-admin/post.php?post=2&action=trash&_wpnonce=12fbc24187
shot: http://awesomescreenshot.com/0f35avjc0e

Regards
shot: