I don't think the software is compatible with the Windows 7 operating system because there is no available release to download in order to test it. Initially, the application was released by Frontrange, but then they have been acquired by Heatsoftware. I've then used the new website and searched using the available function, and it redirects to the same old website.
Based on this experience, I can only believe the application is discontinued. Use the following page to reach support to ask them about the status and compatibility of the software.