I have been 2 hours trying to configure the Facebook Comments through the configuration "comments" option and through the facebook app site. No way to configure it. First I got many errors than redirect me to an error page (error 191, etc.) .. then after deleting and creating the app again in facebook, when i click to facebook connect button on my product page, nothing happens, i am redirected to the same page of this product.
This should be something easy, please give me a hand, but don't tell me to see your documentation page because i have seen it many times, i have done what it says but the problem is still there.
Thanks for your attention.