I bought this product through the Humble Bundle a few years ago and activated in on my PC at the time. I've since bought a new PC and want to activate it on here instead. The product isn't listed in 'My Products' here on the MAGIX website and I can't activate it because it says the serial number is 'already in use'.

How can I get access to the software again? I don't even remember creating a MAGIX account before but apparently I have one using my email. Perhaps I used a different address?

Thanks,
Joe