Finally, I and my wife received our card Friday (5/25/2018).
Before I start, I want to thank following people:
1) Mom for maintaining the DV AOS forum and helping people like us. And taking time to reply each and every queries.
2) Congressman office and its officer who helped to sort thing out.
3) USCIS for taking prompt action.
Here is my DV lottery journey:
1) My case was current on November.
2) I sent my application on Mid October, got receipt and biometric letter 1 week after that.
3) Had my fingerprinting on November 9.
4) Here comes the long wait. Went to infopass each month of Jan, Feb, Mar, April, and May. Tried almost everything; request to expedite, congressman inquiry, etc.
4.1) On April infopass, officer told that an interview was already scheduled. Since, I didn't attend interview the officer may deny, but I didn't receive any letter. He printed the copy of interview letter and handed to me. Me and my wife both were blank out after coming from the meeting. We directly went to congressman with interview letter and mentioned that i didn't receive any letter. He made the copy and said he will inquiry. In the mean time, I requested ombudsman inquiry, did phone inquiry, scheduled infopass for mid of may and kept on following up congressman officer.
4.2) During first week of May, I received email from congressman officer that contained communication between KCC and officer. Looking at the communication chain it seems like USCIS was waiting for KCC to send package, and KCC was waiting for USCIS to ask for package and deadlock happened. Finally deadlock was resolved and package was sent to USCIS Field Office.
4.3) Still didn't receive any thing, so went for one infopass. This time officer after putting my receipt no. asked if my case is diversity visa (which previous officer never asked). He said without me telling, "you have some constraint of time". I added about constraint of count as well. He told that there is DV expert officer who is looking my case and email him mentioning all constraint that I have.
5) Finally, received interview letter after few days. Had interview within week.
6) Interview was pretty straightforward. All the questions was from I-485 form. All yes no questions. Additional, he asked about as what status we came. We told as student, and provided the copy of all of our I-20s.
6.1) We didn't get approved on-spot but received the letter that they require some time to render the decision. But get our case approved after 3 hours.
7) Received our card, approval letter, welcome letter Friday.
Here are my suggestions from my experience:
1) This forum has everything we need for DV AOS. Try to find out, and ask only if you couldn't find the information you are looking for.
2) Look for situation if there is deadlock happening between field office and KCC (Both may be waiting for each other to communicate).
3) Make a copy of all the original documents that you are taking.
4) Take original documents of all the document that you sent in package (But not limit of taking only original of the document that you send, Take any document that you think might be helpful)
Congrats every body who has received their card, and best of luck for those who are waiting for card to arrive.