Jokes on me as well lol
My GC said was delivered by USPS on Dec 22, but the UPS store did not received it (my mailing address is a UPS lockbox, usually I will get an email notification of packages delivered to UPS the same day). My husband thought it might just been the holiday season, UPS busy with all the packages and didn't get the time to scan them all into their system, so we waited til Dec 26, still no result. I was so desperate, we opened a case with USPS and filed a police record of potential lost/theft of ID card and ready to fill I-90 replacement of GC (another 6 months - 1 year perhaps), then guess what....
Right after we reported to the police station on Dec 28, we went back to the UPS store to pick up another package and another employee we know for a long time was nice enough to help us finding it again (3rd attempt after other staff), and finally found it in the pile....lol
Looks like it was the USPS fault of not putting that into the package pile on top for them to scan as package (usually they put all the things in a bin and packages with tracking# on top, mails on the bottom), and UPS somehow thought it was a regular mail and did not scan it into the system....
Anyway, what a rollercoaster experience. Big relief that I got the card (they are a surprising amount of USPS losing GC cases I found online, got me so scared)...USPS overall is just 💩💩. I hope USCIS could give more options on carriers especially for important documents like ID card, at least required signatures...