Hi all,
My case was approved on January, 09,2024. I received my GC ten days after that. As I opened my Case Tracker app today, I saw a statement saying "Notice was returned to USCIS because the post office could not deliver it. This could have a serious effect on your case". The status was dated on April 10, 2024. As soon as I saw the message, I immediately requested another copy on the USCIS website. I also tried to call USCIS today but had no luck to reach anyone. I wonder if anybody had the same experience of receiving such notice after the GC approval? Thankyou!