When I click the Login or Registration links, I'm brought to a page where I can use the Login with Facebook button. Both of these pages have a popup that displays a big title of "ServicioMoviles.es" when I click them. That seems right to me. We're using Chrome on a Mac OS. What are you seeing?
As for possible causes of the problem, you're using a Gavick template, which has it's own Facebook integration built-in. You'll want to disable that integration to prevent some conflicts that can occur, and it may be the cause of what you're seeing as well.
Hope that helps get you started,
Alex
Login button is opening an APP nothing to do with mine, why?
