comments plugin moderation tool not working

I figured out what was going on. I was debugging on my local machine, and it seems that the facebook admin integration wouldn't work there. Once I moved it to a production/visible server the debugger worked: https://developers.facebook.com/tools/debug

I was then able to troubleshoot the main problems and get the comments integrated. It's odd because the commenting itself will work locally. Live and learn I guess.

I had the same problem and solved it with this:

For moderation tool to work, beside app

<meta property="fb:app_id" content="xxxxx" />

and admin tags

<meta property="fb:admins" content="xxx" />

you MUST add the tags:

<meta property="og:url" content="URL" />
<meta property="og:title" content="TITLE" />
<meta property="og:description" content="DESC" />
<meta property="og:image" content="IMG" />

after that everything worked fine.