Laser/Software Problem

I have just purchased an Atomstack A6/A12/A24 pro and I’m using Lightburn, The problem appears to software configuration. I am all connected up with the laser light on and $31=0 and $32 =0 ready to start. However, when I send a project drawing to the machine the laser light goes out and the unit just goes on it merry way. From what I can see it is following the g code but no laser.

Did you try $32=1?
https://github-wiki-see.page/m/gnea/grbl/wiki/Grbl-v1.1-Configuration