Why can't I rotate the 3D view ?
To rotate the 3D view, you have to push on the left and the right button of the mouse.

Why can't I export the foil ?
The available release is a demo release. Contact Curti Florent to have more details.

Why can't I put the "LE along tip" option ? "
To have the LE along the tip, you must have a flat profile on the tip. Consequently, you have to put the "No profile at wingtip" option in profile section.

If you have others questions, contact Curti Florent.