I got all excited today when I saw my USPS informed delivery... Something is coming my way! But then I saw that the PD on the letter says 02/01/2022, which is my PD for the 751... So yeah, I am getting the 48 month extension letter. UGH!!! I just want my interview scheduled, other people from Columbus that filed online around the same time are already getting their N400 interview scheduled, and I am just here waiting!!!!