admin functions not working

OK, so sometime yesterday the Ranking option finally started working.

Now, however, I have someone who has applied for membership.  I click on "accept" and the line turns green.  Then I go back to the Forum.  If I click on admin again to check to see if anyone has applied, that person is still there, not a member.  Nor can I deny his membership request.  Yhe line turns pink, but nothing happens.

Thanks.