The plugin is not working, why??
First of all, does my live demo works for you? The most common causes of malfunction are: 1) did you enable the facebook app for everyone? (there’s a setting on the facebook app panel) 2) Are you using a cache system like w3 total cache? You have to exclude the pages with the locker from the cache 3) There is a conflict with your theme or plugins. Try if you resolve the problem setting the wordpress default theme and disabling all other plugins. If you find a conflict then I can help you.