The fixed version has been repaired with Prusaslicer's built in Netfabb repair process and is my recommendation for printing.

This doorstop is fairly thin so it may be worth scaling up or stretching along the z axis depending on your door.

To make the scan printer better you can partially move the print below the print bed in most slicers to give the slicers an easy flat first layer to work with - see included 3mf file.