How do I create files that are compatible with the Ortur Laser Explorer app

My laser cutter and computer are in different rooms, so setting things up is a little tricky.

I primarily use Lightburn to wirelessly control my machine, but the manufacturer (Ortur, Laser Maser 3) also recommends an app called Laser Explorer by Leadiffer ( It’s very bare bones, but it lets you position the laser and then send a file to the machine. Which is much easier than having to go back and forth between my machine and my computer with Lightburn.

I’ve used their sample files without any problems, but when I try to use a gcode file created in Lightburn the app opens it but displays nothing on screen.

What do I need to do to make a compatible file?