Thanks for the information and the heads up! Just to confirm, you sent the explanation by email, not through the webform? Also, may I ask, were you a paper applicant or an online one?June 2022 applicant here. I had two passports in the 5 yrs they looked at. On the application I explained that my old passport expired and I needed a new passport for future travel. I received no updates (beyond AOR) until Nov 28th when they asked me to provide an explanation or provide a copy of my old travel document.
I don't know why my first explanation wasn't enough. I tried to submit a copy of the bio page of my old passport through email and they didnt get back to me until Jan 17th to say they couldn't read it (i sent it twice in 2 different formats and both come up no problem for me). This time I sent it and an explanation via registered mail. It was signed for Jan 23rd. Nothing has been updated on my tracker. Still says waiting on you.
Everything else still in process or not started.
My advice to you is don't bother sending any copy of docs via email. Even followkng their directions did not work for me. I honestly feel like this delayed things for me.
When I sent it through the webform, I got an email response the following day saying it was added to my file, but it's not showing up on the tracker as having been received, even though it's been a couple of weeks.