Why is my Lightburn "busy" and the machine doesn't move?

Most likely you have not actually connected to the machine yet. Make sure you are actually connected to the controller and chosen a communication port in the laser window at the bottom right of the software.

If it is a macOS computer, check whether the driver is installed correctly. If the driver is disabled by the system, it will also cause connection problems.

In this step, you need to click "Open Security Preferences" to authorize the software. Otherwise, the driver cannot be installed normally, which will cause disconnection problems between the macOS computer and the machine.