QA worked then NOT

I had the Q & A plugin working great. Today I logged in and it does not work any more. Have made minimal changes to the site and nothing I would think would fix it. I know it is something I will probably have to figure out on my own, but just curious if there is anything obvious besides setting and install that may cause it to stop working.

Have latest version of WP and Plugin
http://www.youthministryresources.com

Thanks in advance for the help!