The preview window should show ‘traversal lines’ in red or pink and the engraver action in black. Can you screen-capture and show me what you’re seeing?
I have a Bachin Maker. it seems to be a direct predecessor to your yorahome engraver.
Is the engraver using GRBL 1.1f or 1.1z?
please upload screen captures of the preview window and maybe photos of your workpiece.