As far as I can tell the green box currently does not correspond to the real world. If you move the maslow around by jogging you can place. It in the real world at the corner of your material. Set this corner as home using the set home button. Then do trace boundary to see if the material is going to be covered by the cutting area. I would also make sure that you have some extra foam or something at the edges so that the maslow doesn’t tip over. Other advice is to run some of the gcode with no bit to see if your setup makes sense. Hope that helps. I am working on some better instructions that will explain all of the interface but it is not up yet.
The way the web page interprets this is not ideal, the initial screen always puts the centre in the centre of the Rectangle instead of moving the home position to where you set it. There are multiple (5) views available.
Try left clicking on the white area to change the view. Although part of your Gcode is outside of the green box, the Maslow will still start from the home position as defined by the XY Home. Any cuts will be in relation to the defined home position.