my wife's EAD was returned 3 times last year and that made us crazy, I had to go to USPS website to write a complain then the mail finally came to us. This year we got notice that the renewal EAD has sent to us, but 12 days passed we have nothing, I think the same damn thing happened as last year, I do not know why. other mails including other letters from USCIS can reach us, but this one, very strange experience....