I now have the same problem. Unable to efile. Says Customer number required which is there on the screen as well as efin number wihich is blank but won't let me add it. I have efiled returns up to today and DID NOT  get this message until today. I have been with support on my computer for over 2 hours each person doing all the smae theings you all have tried...thought I'd try and see if anyone can help while I am on hold with PS asI am still dead in the water. HELP.