Push 2 Start problem - please help! I'm stumped.
 

I changed the starter on our 2015 Sentra last night, and suddenly the system won't start the car.
The fob operates the locks and trunk, gets recognized as present by the system, but won't start the car.

Here are the symptoms:

The key fob operates the door locks, trunk, and alarm.
The start button will not start the vehicle or light up the dash.
The exterior door lock button works and recognizes when the fob is near the vehicle.
The system recognizes when the fob is inside the vehicle.
The cluster shows the "press brake" and yellow key lights when start button is pushed.

When the fob is away from the vehicle, the yellow key light flashes. When the fob is in the vehicle, it glows steady.
The red security light occasionally flashes.
Placing the physical key in the door lock and turning does nothing. The locks do not respond.

Everything was working fine, I disconnected the battery and replaced the starter. I did not disconnect anything for move any wiring.
All fuses are good.

Does anyone know what I can do? The car is stuck with the window rolled down, because nothing works except the door locks.