The plugin dont work at my wordpress!

Hello am sorry, but your plugin not work at my wordpress website, i really like the plugin, but i need your help for see what is the problem for the plugin not work. The problem is, i make a post i put the shortcode and not appears any buttons when i preview the post.

This is the website:

http://tinyurl.com/n4n4kka

Thanks

http://ww.wp.xz.cn/plugins/social-locker/