Laser is burning when I use the focus (fire button) and it engraving black (power is not changing)

Do you get any errors presented in the ‘Console’ window?

The setting you list are not a complete view. That window scrolls so please post again including all that gets spit back after you enter $$, then hit the Enter / Return key.

There are known issues with grounding of the Ortur, covered in the following post which you should be aware of, and worth review.