Biqu Bi homing does not work

Hi!

My new BIQU B1 will not home! I get no motion and a message "Printer Halted, Kill() called.

The z axis stepper motor is powered X and Y are not energized at all.

I can not get any motion on any axis.

I have the same problem , I sent a mail to bigtree/biqu but with no luck . They don’t understand. It’s so frustrating