You have your domain configured with www in your Facebook application, but you are attempting to use CB Connect from your domain without www. This will not work. The social sites are domain strict. You have to use it with www as it's what you've configured in the Facebook application. In the Facebook application you can try setting "App Domains" to allow it to function regardless of www, but you need to pick 1 or the other and redirect from the other to the one you want using a hosting configured redirect or just htaccess. This is not a limitation of CB Connect, but is strictly how these social sites function.