Went back to the tire store, and they could not get things to work. They asked if I'd be willing to go to the dealer with the understanding they'd cover any costs. So...back to the dealer (just a few miles away). They took me in without appointment and less than an hour later, let me know that one of the sensors was DOA. They were suggesting that the tire store should probably be responsible for the replacement but were open to warranty if need be. I said no problem, and went on a trek for a new sensor (about 30 miles away).
Got the sensor and went back to the tire store. Realized I forgot the key for the wheel lock so went home to get it. Chit chatted with the wife who rolled her eyes
and then went back to the tire store. They mentioned that the "failed" sensor was giving them some trouble last week after the wheels and tires were swapped out (it kept going into sleep mode), so they were pretty confident that the new sensor (which they reimbursed me for) would solve the problem. When I left the shop, the warning light was off, and about 5 miles later, the pressures appeared on the display.
I have bought maybe 20 sets of tires from this company over the last 27 years, and never had a problem like this. They made everything right and I will continue to go back to them when it's time for another set of road donuts...