As far as I can tell anyone can download the software if you have the code. The code seems a generic one and not unique per magazine reader. If you would like to try and see if it works head to this link http://www.hdrsoft.com/download/dpmag/ .
In the access code box enter PDM112014
The software is available for free until December 9th 2014. I recommend getting the magazine though as it has some handy guides on HDR technique and how to use the free full photmatix software. The magazine is called Digital Photo and it is the November 2014 issue. (Link to magazine site)