Ultimate Facebook Plugin comments not showing

I'm using the Sahifa WP theme and I can't get the Facebook comments to show in the posts. I've tried all that I know how to do (I'm a novice here, so I'm not that great with coding) and gone through suggestions I've read about on here and I can't get them to show up. Please advise on how to fix this. Website is http://murfreesboro.com

Thank you so much!