z axis zeros very high

I just got a CR-10S pro and it worked fine for the first few days but after flashing the most updated creality bltouch to my machine and screen, it fully unleveled itself. The nozzle is so high and no matter what I do it won’t get lower. It is also high when not printing even though it says it’s 0.0 mm off. I also tried leveling it but sometimes the motor won’t go down when I press the z button once I get to a certain point. Also when I hit Z home it just goes back to it’s original size. No matter what I do if I do get it to Z home to 0.2 mm when I print it gets higher.