Hi RodriShogun,

Thanks for this giveaway

But when entering the key I have the message "Duplicate product code"
(already used by someone else)

I've clicked on the button 'retrieve account", to send to the owner of the key an email, if that can help you checking if there is a key inversion.

Sincerly

theoretically the key is correct :/
Try again, if it fails I will contact the supplier.