Try with 2.1.00 RC-11 for the M2.
You can install 2.1.00 and 2.0.05 side by side ;
If you’re installing a Release Candidate alongside your existing LightBurn installation, LightBurn will offer to import settings from your existing installation, if there aren’t pre-existing settings.
For the power it seems that LinuxCNC Flavor sets S-Value Max to 1 change it per your laser $30 value or Max Spindle Speed value, they must match. (usually 1000 or 255) Tested with 1000, but to get 2 numeral places you have to set it to 100 for a taco-a-taco conversion.
Tested now with 2.0.05 it seems correct!