Currently, the developers offer 3 versions of the Encompass product: 17.1, 16.3 and 16.2. All of them are listed with Windows 10 being compatible. However, it's possible that Encompass360 to lack compatibility. They don't even mention it on the official website.
You can check the manual on the following link. Since there is no laptop with support for Windows 7, I suggest you get in touch with the developers of Encompass to ask for a direct clarification regarding the compatibility and solutions.