In Windows, go to Control Panel/Programs/Uninstall a program.
In macOS, you'll need to manually remove these folders and files in the Finder: "Unique" incl. NKS is used here, you can substitute the productname. Open the Finder, click "Go To" in the menu, open "Go To Folder" and paste the paths to locate.
NKS (Native Kontrol Standard):
/Library/Application Support/Sugar Bytes/Unique
/Library/Application Support/Native Instruments/Service Center/Unique.xml