The trial version of this software is available only after you attend one of their courses. The trial is available for 45 days, 2 days and 5 days in different versions. All versions offer full functionality of the software.
You can check the available courses using the following link: www.taproot.com/store/courses
If you attend a course, you'll receive a trial version of the software as well along with installation instructions or something related to this procedure.