@JBRE22022 @madovi
Yes, the NOS was flagged as received, but they lost it. It was originally sent in October, but I got an email saying late January they didn't have it. I had the embassy re-send it, they forwarded it on the same email thread they originally used and cc'd me, so I was assured that it was delivered both times. Then nothing happened, I sent a follow up email and they then replied confirming receipt. It still didn't appear on the tracker. I had to email them like three more times until they added it to the tracker in early March, and they backdated it so it appeared as if it was "received" along my other documents. (I say "received" because they lost my documents and emailed me to send pdf copies of everything 4 months after I originally sent it thru mail. This includes the receipt for the money order, so make sure to save it!) Then I kept emailing to ask for a status check and I got the copy pasted replies assuring me everything was fine.
Shortly before my 16 weeks was up, I got a random email from my embassy saying they issued me a No Objection Statement. I frantically called them asking what was up -- they didn't tell me anything except that it was issued upon my request, which it most certainly wasn't. They sent me a copy of the NOS, and it was this very interesting (almost passive-aggressive!) newly issued NOS, that extremely clearly indicated that it was being re-issued, it even included a screenshot of the tracker webpage showing it was supposed to be originally received in January. It felt like an official protest by the embassy. I got the approval 5 days after that.
My working theory is that the people in the waiver office realized my 16 weeks were almost up, checked in their system to see why it wasn't finished, saw that my NOS was still missing (because they use an outdated paper based filing system), wanted to email me to ask to send my NOS, realized they already did that 4 months ago, so they sent it to the Embassy directly. I have zero proof for it, but at this point I'm not giving them the benefit of the doubt for anything.
Sending a congressional inquiry is easier than you think: go to your Senator's or House member's webpage, find the link that says "Request Help with a Federal Agency", fill out the forms (they may ask you to print out forms, sign them with an actual pen, then scan it), email to the specified address, then wait. It's very hit or miss -- I contacted 4 senators' offices (2 from my university's state, 2 from where I'll be employed), one responded within the week, one responded after 5 months (funnily enough, this senator is famously very pro-immigration), two never responded. Just send out requests and go with whoever responds. We sent two congressional inquiries (the reply to one of them is one of the highlights I included in the previous post).
I also wrote to the White House in February (they also have the "request help" option under Contact Us), which they eventually actually forwarded to DoS to my great surprise, and I got an official letter from the Department of State Outreach and Inquiries Division -- but White House was also 5 months late at reading my letter and forwarding it, so the DoS reply just essentially said "yeah we already approved your application, what else do you want from us? Go talk to USCIS".
As of now, I'm waiting for USCIS to approve me about 1.5 months after receipt notice. We sent another congressional inquiry, and the reply was that I'm pending a background check. I guess it's because I'm from a less than desirable country? Apparently living in the US for 6 years and getting a PhD from a Tier 1 US university means nothing.
Sorry I'm making this a bit of a rant -- it's just so frustrating when they pull the trick of not acknowledging receipt so they don't look like they were delayed and everything was just fine. I lost 6 months of my career to this.
PS. I would advise trying to send them actual physical mailed letters along the usual emails -- it felt like they have a better success rate, because they probably are not being read by the same person who replies to the emails. I found out they lost my documents shortly after I sent them a physical letter. For 4 months they did not reply to my emails asking if my documents were received...