This is an error from facebook,
– You can’t use like box with an url of website.
– You can use like box only with an url form a facebook page.
It’s a little more complicated than that.
In reality, you must start with a like button, with the url of your website on your home page
You must activate openGraph, and enter informations in section “homepage”, it will add some extra info for facebook.
After that, when the number of “likes” will be up to 25,
you must go to Insights Facebook and link your site with your ID.
a facebook page will be created by facebook, and admins of this page will be admins you enter in openGraph infos.
This page will be not visible to others users on facebook, it’s just an interface, to send infos,photos,news, etc… to your fans.
So you will have a page facebook linked with your home page, and you will be able to use like box with the url of your website.
++ 😉 (and sorry for my poor english…)
