Can´t set up site url in ultimate facebook

Hi guys,

Following the step by step instructions in setting up the ultimate facebook plug in.

It just simply doesn´t accept my site url, which is the same one from the wordpress ultimate facebook settings. Exactly ass the instructions says.

The facebook page when saving changes, gives me this message:

Error

You have specified an App Domain but have not specified a valid integration URL.

elcaminodelreiki.com must be derived from one of: Site URL, Mobile Site URL, Canvas URL, Secure Canvas URL, Page Tab URL or Secure Page Tab URL.

Hope you can help me out. I can send you the screenshots.

Thanks,

Jeymi