I have experienced EAD letter losted. You should contact USCIS if it is too long. In my case, they can find out a tracking number for the mail. But difference ppl give different answers in USCIS. Some of them are totally wrong information. So you may want to make multiple calls to confirm.
your status was not get updated when the letter was out for delivery?
too difference
【在 m**********9 的大作中提到】 : I have experienced EAD letter losted. You should contact USCIS if it is too : long. : In my case, they can find out a tracking number for the mail. But difference : ppl give different answers in USCIS. Some of them are totally wrong : information. : So you may want to make multiple calls to confirm.