i ordered my item and then added expedited shipping afterwards but before it was shipped. I was told it would take 15 days max and if i hadn't received my package to contact the seller. It was been past 15 days and my package info has not been updated since the 13th. I called usps and they said they had never received it. my seller also said there was a backlog in newyork and my package should be here shortly. Usps said there was no backlog

my tracking number: LK397140236CN

i need my package by the 3rd