Basically by the time of moving the wordpress directory one level up, reducing the url by the /wordpress, I've changed all the settings including the URL in FB app, that connects the site with FB. Even after that, when I click on recomend button and I am logged in FB, for a second my photo appears like it's ok, but then it changes to a link "confirm" with a field for a comment. Unless I put there anything, the recomendation cannot be finished. By confirming it, the new window with this FB adding stuff opens and I have to finish it there.
I've checked all I could but I'm still stuck.