The software license granted to you by MicroSabio with your purchase of PDFX allows the use of the PDF-XChange system only with A-Shell. If you try to print to the PDF-XChange device from any application other than A-Shell, you will get conspicuous, annoying and un-defeatable PDF-XChange watermarks printed on all pages.
In order to use PDF-XChange outside the confines of A-Shell, you must puchase per-PC licenses for that purpose. These licenses are available to A-Shell users and resellers from Tracker Software, the developer/vendor of PDF-XChange. As of this writing (August 2019), MicroSabio does not sell PDF-XChange, although that may change. If you are a reseller and anticipate on-going sales of PDF-XChange, please discuss with MicroSabio.
