Events+ "configure your Facebook app for Social RSVPs"

I keep getting this note,
"You will need to configure your Facebook app for Social RSVPs add-on to work properly"
but I have followed the instructions provided to create a facebook app, and I entered in the app id etc. Not sure what I'm missing?

Also when I create an event I don't see the "No/ maybe/ I'm attending" buttons on the event. So people cant sign up... or are these only available when people are logged in?
Please help - thanks