Facebook and Registration Problems

I want people to be able to register for buddypress in the modal popup via facebook or manually. when I clicked on “register” – the modal pop-up doesn’t come up. It redirects them to a page.

Also, when I try to use facebook, I get “Given URL is not allowed by the Application configuration.: One or more of the given URLs is not allowed by the App’s settings. It must match the Website URL or Canvas URL, or the domain must be a subdomain of one of the App’s domains.” How do I fix this problem.

Note, I already entered “http://mytalent.la” in the app domain field but get this error message: “This must be derived from Canvas URL, Secure Canvas URL, Unity Binary URL, Site URL, Mobile Site URL, Page Tab URL or Secure Page Tab URL. Check and correct the following domains: mytalent.la”

I’d like to send more info… but am having trouble finding out how to keep messages private.

Thank you. If I can get the theme working, it looks like it’ll be great.