Hi, guys.
I wanna share my experience about the EAD, hope could help someone relieve the stress.
12/01/2017 I485, I765 arrived USCIS.
12/08/2017 USCIS Acceptance Confirmation (email updated that receipts was sent)
01/02/2018 Biometric Done.
01/05/2018 RFE affidavit of support (email updated on 01/09)
02/14/2018 USCIS updated received my RFE response (Fedex delivered on 02/12)
03/02/2018 did Service request and Ombudsman online.
03/08/2018 SR: in the old system shows not assigned. Ombudsman replied: We will notify you when we receive information from USCIS.( registered USCIS New system
https://myaccount.uscis.dhs.gov )
03/13/2018 We are producing your card and will mail it to you. ( updated on 03/14)
03/14/2018 We approved your case. ( updated on 03/15)
03/15/2018 We mailed your card to you. The U.S. Postal Service will deliver it. ( updated on 03/16)
PS: old system still shows case was received, so register the new account to get latest update .
Now: waiting for the card to be delivered ( no tracking )
Overalls, my opinion ( DIY, no lawyer) :
RFE might not start over the waiting time. (maybe I was lucky, maybe Ombusman helped)
NBC normally takes 4 months to process EAD at present . (compare to others' share timeline)
hope the information above can give some clues to help someone still waiting.