Paragon NTFS app version problem, how to update? I have a little problem (not me, a friend).

He bought a 1TB HDD with some service files, including Paragon NTFS 11.3.11 (he bought this HDD with his Mac, which shipped with Mac OS X version 10.10 or 10.11). He has updated his MacBook to 10.12 and Paragon stopped working, so I think this is a version problem. 

The question is, how can I update this Paragon software for macOS 10.12? Do I need to buy a new version of this app??? 

Samsung's services files do not have a serial number, only some Windows apps and Macintosh NTFS Paragon driver (Paragon 11.3).
yes, you need to buy a new version of this ( paragon 15 ).