Utlimately the first mistake the dealer made was mail the check and paperwork to the local photo license center. As mentioned, they didn't make the check out to the state DMV, but a county DMV (which doesn't exist).
Went in to the dealer this morning (3rd time this week dang it) and I suggested giving my father a dealer plate for the time being. They agreed as the manager read some of my reviews and asked me what I was looking for per compensation, I told him I only wanted this all taken care of as if my father were to be pulled over in either Virginia, Maryland or West Virginia, depending on the cop, IMO they could actually impound the car until they get everything straightened out as I'm not certain how insurance or registration would play out on a car that technically still has no "official tags" yet.
My dad and I are a lot alike. I'm in my 50's, never bought a brand new car, and only pay cash out the door. That said, I've convinced my dad that since mom isn't around, and he has his military pension as well as some other income coming in from the jobs he worked, to splurge and buy exactly what he wants brand new, and at 1% APR, at his age, take the monthly payment and leave the money in the bank for any trips he wants to take.
Years ago, when I first convinced him to buy a brand new car, I'll never forget parking in the dealers lot and asking him as we're getting out of the car on how much he wanted to spend... his response "13k and not a penny more!". I looked at him and told him to stop being cheap and spend money on himself and take a payment. Thank God he listened to me. He has fun driving it.