chat pro when i try to enable in group

Hi i am having issue enabling group chat. when i try to enable in group i go the GROUPS, choose the group and EDIT then i press enable chat and i press save changes but then it redirects to an error saying are you ure you want to do this " try again" and when i try again it goes thru the same process but never saves. when i click on group chat on the profile it takes me to a 404 page im assuming because it wont let me enable it.

any help?