I've checked the Price list on the official website, and the software doesn't have modules you can buy. When you buy a version, it's the full version which means you're doing something wrong or the application has issues.
The first thing to try is re-configuration the application, then check the Help to see if everything has been done correctly. If you encounter the same issue, contact the developers and explain the issue: http://sonicscores.com/contact-us/
It's possible that you might have found a BUG that can be corrected in future versions.