The window that appears when using this software is called virtual printing, which means you create a PDF file that can be saved on the computer. Afterwards, open the PDF file and go to File > Print. You will have the possibility to physically print it. This application is used to create PDF files, and sometimes this process is called the virtual printing of a PDF file, meaning that you take various content like documents, pictures, charts, etc, then "print them" to PDF.
I have tested the application, and there is nothing wrong with it. This is just the way it works.