2017 Malibu won't start after windshield replacement

Had the windshield replaced and the glass people say the car won't start. This car has lane departure with the camera in the windshield. When I get the car back home from tow truck I pull the windshield cover off the back of the camera and find out that they didn't even have the camera plugged in. Not only that. When I try to connect to my obd with this camera plugged in I can't get a connection to the main ecm. When I plug it  I CAN get a connection but only code read is maf sensor. Still no crank no start. I don't know what these people have done to the car. I was thinking it was the brake switch but the lights do come on when I press the brakes. Unless there's something else inside that could prevent it from starting.

Just wanted to update if someone else have this problem. If the sensor in the windshield is unplugged then alot of stuff wont work for some reason. I found out that the plug was damaged a little bit and couldnt go completely inside. Forgot to update this thread a while back