Like Button Not Showing

Until recently, I had not had any issues with this plugin. The comments feature was integrating flawlessly with Facebook and the likes were working as well. Recently, the “Like” button stopped showing up on my posts. The comments section can still be seen and seem to work, but the “like” button doesn’t appear for anyone except for me when I am logged in as the admin for the account. Here is an example post:
http://www.taylorezell.com/harry-potter-myers-briggs/

http://ww.wp.xz.cn/plugins/facebook/