DXF file is an export file from SketchUp, the parameters of which must be AutoCad 2018.
To design furniture products in SketchUp you will need the free ABF plugin https://www.getabf.net/
And a file with processing templates for the ABF plugin [link]
Please note the import restrictions.
All parts should not be transformed using standard SketchUp methods (rotation and scale).
All parts must have tags.
All parts must be placed along the axes in multiples of 90%
Corner and recess machining is not imported. The complete part is imported. Processings must be added to iFurn.pro