Keep a hawk’s eye on tracking. Once it’s in UPS’ hands (past the label created stage, and in transit), give them a call, kindly state your case. Let them know that trying to contact this company is a dead end (because the first thing they’ll tell you is to contact YS)
At this point they may tell you that they can’t do anything until Uncle Sal uploads the billing address into their system. Once they do (you’ll see the incorrect address appear on the side of the tracking on the tracking page), you can give them a call again and state your case. It’s beneficial to have a MyChoice history (not sure if necessary though) as they can amend the incorrect address to an existing one they have on file.
This happened to me when, in a rush, I misspelled *one* letter on my street address when pre-ordering the 700. I would periodically email YS since the August pre-order date, zero response. They (YS) only responded with an automated “sorry, absolutely no address changes” email, on the eve of 11/1 and shipped it out. So I had to make sure to intercept and correct it while already in transit, UPS was able to fix and package got here w/no issues.