Printing Airplane problem 3dlabprint

I bought material and I want to start to make my first plane.

I have Ender-3 V3 KE 3D Printer I try to print part CUB wing L3.3mf from Piper-J-3-Cub
Piper J-3 Cub – 3DLabPrintModel link

Im using .3mf When I put the part in Cura or in Creality slicer is missing the ribs on the bottom pictures bellow

Cura

Picture1

Creality slicer

Picture2

In prusa slicer this ribs are showed but the g-code from prusa in not working on this printer even I setup the same printer there.

Picture3

Can you please help me how to print this ribs ? Why I cant see this ribs in Cura and Creality slicer.
Can you please also give me Ender-3 V3 KE setings for Prusa slicer

Shows the layer for me in Prusa and Creality, though on Prusa the rib starts on layer 2 but on 1 for Creality.

Sorry I don’t understand what do you mean? Can you please explain. I need help thanks

Well you are going to need infill to support the ribs. 10% gyroid should be enough, but it will add to the weight. Have you the lightweight PLA? like this

Yes I have but that give additional weight of the part. Where I can find Prusa settings for Ender V3 Ke?