Upgrade from Cross DJ Free 3.2.0

I have purchased a licence to upgrade from the free version and entered the Serial Number into the box, but when I reopened the program it still says Cross DJ Free 3.2.0
Why is the software not showing as upgraded please? How can I fix this problem as I cant access the MIDI Controller element of the software.
Thanks
David
Why is the software not showing as upgraded please? How can I fix this problem as I cant access the MIDI Controller element of the software.
Thanks
David