GC was sent while we were away from home for a few months. someone was supposed to be hanging on to our mail but they did a bad job. since USCIS never told us it was sent (and i kept calling to ask) we didn't know to ask that person to be on the lookout for it.
yes, AOS approved Dec14 last year
yes, we moved, now in NY was approved in NC
yes did e-request for I90
yes I765 and I131 was approved last year
i'll call USCIS today and ask about the ADIT I551 thing