Can't send lives or see other players progress

Every time I try to send a life on facebook Alphabetty I get this error message 'Can't load URL: The domain of this URL isn't included in the app's domains. To be able to load this URL, add all domains and sub-domains of your app to the App Domains field in your app settings.' If I then click ok it gives me this message 'Sorry, this feature isn't available right now: An error occurred while processing this request. Please try again later.' But when I go to the app settings there is nothing there and I can't close the 2nd error message I have to close and reload. I also can't see other players progress like I did before.