How to make the "P" and "e" hollow?

I have a slight of a problem here.

This is the logo I would like to convert from 2d to 3d

After that I followed all the instructions as per described in the following link :

http://ift.tt/1AKQsd5

However as I opened my file in OpenSCAD, the "P" and "e" were not hollowed out :

Please help a student out here. It is my very first time posting here and also using Inkscape and OpenSCAD.

Thank you very much for all the help.

Good day