Win 10 license

"..Actually Windows 10 setup automatically detects the edition type of previously installed Windows version in your computer and then it installs the corresponding edition of Windows 10. For example, if you had Windows 7 Home or Windows 8/8.1 core edition installed in your computer previously, Windows 10 setup will automatically install Windows 10 core (Home) edition in your computer.."

The activation says Win10 Pro was installed with media creator....

Maybe I had a bootleg 8.1 pro to begin with? Bought laptop used. Never gave me a activation error. Oh well.