New Master and Booster

[one3n3my]

I installed a new Master Cylinder and Vacuum Brake Booster today. I bench bleed the master, reinstalled the brake push rod to the brake pedal, and bleed the brakes.

Now the brake pedal will go to the floor and not return to the original position and still not having any brake pressure to the rear wheels.

I procceded to take the rear tires off to check the wheel cylinders and they are not even actuating for the brakes to work. So here is my question: Why is the brake pedal going to the floor and not returning and what could be causing the wheel cylinders to not actuate the rear brakes.

Appreciate the help.