What do you mean by filing DS260 and sending it through to the Lockbox? Is the DS260 form the only thing you’ve submitted to date? That is form gets submitted online, it doesn’t get sent to USCIS, it is not what kicked off your AOS process. You need to provide more information on precisely what was sent in order to get proper guidance.Where do I get the receipt number for filing on my i-485 form? After filling our D260 (Principal, spouse & child), sending it to through the lockbox, we have never received any response from November 2020. KCC & USCIS are both silent despite our numerous attempts to contact them via email & phone. Our case is current and 7 days ago, we reached out to our congress woman office. They have send our inquiry to their Congressional Liaison at the Department of State and are now awaiting their response. What do we do now given that time is moving pretty first?