I don't think this application is still supported because I've visited the official website and there was nothing mentioned about the American Contractor application. Their new software is called ViewPoint and the developers are also changed which I tend to believe that they have been acquired.
You can get in touch with them using the following link: http://viewpoint.com/contact-us
I've also used Google Search and related search engines to look for other websites, but there weren't any available.