That message indicates that you have a Channel setup in JFBConnect to fetch a stream from, or post to, a Facebook Group. You can grant that permission to an administrator of your app, but guests/registered users of your site wouldn't be able to see that permission request. Normally, that's ok because you likely are only setting up Channels for your administrators on the site.
If you plan to create Channels for non-admins of your Facebook app, you'll need to go through the
Facebook App Review process
. That link is to our blog post explaining how the review process works.
I hope that helps,
Alex