Hmm. Then the plot thickens.
The salesman called it a kill switch when she asked what was going on with the car, but based on what we've learned since it should be an IGLA. The installer talked her through it and now she can use the fob, her phone, or push buttons in the car.
He has supposedly been quite nice, just not able to send the missing stuff, and his name is Mike if I understand it correctly.
Of course, it's a "new" '23 so it might have been a couple of years since he installed it, and supposedly he shows the customers how things work - which couldn't happen in this case since the car was transported. Combine that with an inept salesman and things went sideways.
I'll let you know when/if the stuff shows up.