I am new to this community and I recently purchased a Workbee 1010 router. The Z probe is working in a weird way, it only activates when the BlackBox is powered through a USB cable from the computer and if I switch on the PSU the Z probe doesn't work anymore. This is my first CNC build, I could have made some silly mistake. Can anyone help me with this? I have attached a video to show what exactly is happening on the machine.