LightBurn software will not link to my xtool D1 laser. Keeps saying that it is busy or paused

I have loaded the Lightburn Software, go through the set up. created a simple circle to test the laser but I keep getting and error popup: busy or paused. I am using a MacBook Pro laptop.

Have you updated the firmware on the D1 to one that supports LightBurn? It has only recently been released.