Hi, I'm feeling a lil nervous. My package was mail Aug 17, delivered aug 22. Sign by t thomas.I haven't recieved any text any email. Therefore I spoke to a live agent via emma on sept 21. There was no receipt notice in the system. They told me to contact uscis lockbox via email to do an inquiry. I sent the email same day. Going on today the Sept 26 haven't heard anything. I'm the beneficiary (parent). Anyone else experience this, or any advice. I sent money orders, so can't tell if checks were cash.