This application is not available for public user. Once you buy it, you have access to a Technical Support that can help you with everything you need related to their software. I have tried find some troubleshooting information or manuals for the application, but there are none, or if they exist, they only exist and are available for customers.
Contact the developers in order to find additional information: http://botreesoftware.com/contact/
Secondly, use the built-in Help documents to search for the cancellation procedure.