SSN
They sent a denial. Called and was on the phone for almost an hour answering questions. They approved me and then transferred me to security. Security wanted front/back of DL and SS card. Also a utility bill. Sent info in (no fax or email). Received another letter my cable bill is not considered a utility bill. Sent in electric bill and waiting now.
same happened to me, and after sending ss card, drivers license (multiple times, of course the first few were not legible)
they still had the nerve to tell me, that they could not confirm my identity, and there is nothing more for me to do, bye.
Good luck to you