It is on Default. I purchased a domain from Godaddy and followed the steps by Ning for Domain Mapping, but that didnt work out too well. So a rep helped me redirect my .com to my ning account (through Godaddys features) so i didnt have to use the Domain Mapping from Ning.
When i activate the Facebook App it tells me "Your Facebook App was successfully activated." yet still does not work. So i tried to Set the app to default ning settings... still same result. Im not sure if this is happening because of the recent Upgrade to Ning Plus or something of that nature.