I have same problem. My school sent the documents via Registered mail, USPS and reached Philadelphia Dec 12. When I checked the tracking and stated "Reminder to Schedule Redelivery of your item before December 28, 2021:, Delivery Attempted." I really don't understand how come they failed to deliver to CGFNS. I suppose that there are personnel who can receive it. I still hope that CGFNS can receive my documents.