Door alignment after subframe connectors?

More than likely the car was sagging before the connectors were installed and the door had been adjusted to fit the sagging body. Now it’s not sagging anymore, and the door needs a re-adjust.

As for the shop putting a twist in the car, I’m personally of the opinion you’d actually have to try and do that. I install connectors with the car leveled or on its suspension (I’ve done 3 of my cars so far), but I’ve seen guys install them while their car was fully stripped, handing on a rotisserie supported only at the ends, with the car hanging sideways so they could weld in the connectors standing up. And they didn’t have issues with getting their doors aligned on reassembly.