First 3D print made up of diagonal strands
Based on your comment to the comment of 0scar:


  When I go to Fillament, I get: E in mm3: On; Fil. Dia. 1.750


That's almost surely the problem. Unless the model was sliced for "E in mm3", this setting needs to be off. What it does is change how the printer interprets extruder moves in the G-code: rather than in linear mm of filament to move, as volumetric mm³ to extrude.

At 1.75&nbsp;mm diameter, that's a factor of 2.4&nbsp;mm³/mm, so you'll only be extruding 1/2.4 = ~41.5&nbsp;% of the material needed. That extreme underextrusion will give exactly the effect you're seeing.