I am trying to create app in facebook but it is giving error while adding site url and app domain field
error message for site url : "Something went wrong. We're working on getting it fixed as soon as we can."
error message for app domain : "This must be derived from Canvas URL, Secure Canvas URL, Site URL, Mobile Site URL, Page Tab URL or Secure Page Tab URL. Check and correct the following domains: www.my-domainname.com"