Facebook Plugin only visible when the user is logged on. How do I change this?

I hope someone can help me. I have a Facebook Social Plugin on my website. However, people can only view it if they are logged into Facebook. How do I make it visible even when people are not logged into f开发者_如何学运维acebook. To view what I mean see this

Your page must have some restriction on it, I can see an error of 'This page can't be seen by the current user. Please check page privacy and visibility settings.' - If your page is limited to certain countries or age ranges the plugin won't be visible except to users who meet those restrictions