Now, I’d like to convert those points into a mesh.
I am using “Convert to → Mesh” in Object mode.
What I got is a perfect shape but every “bevel” curve is composed by a lot of segments, and I am not able to easily fill the segments and get a face:
Ups, sorry i thought you wanna increase precision and didn’t payed attention to the fact that your curve isn’t filled (why???).
Now i see the problem: if you make (or add to your imported curve) a closed bezier circle (Add->Curve->Circle) switch the shape 2D, enable Fill Mode to both, go into edit mode duplicate the circle and scale it than you get a disc with a hole. But: you shape isn’t filled, it’s only a curve… Hmmmm.
Ahhh: your shape is build with not connected curves so it doesn’t define a closed shape. Then the conversion to mesh…
Ether close it before exporting or selected all vertices of the converted mesh, merge vertices by distance and make a n-gon by typing f.