I purchase a license for Upgrade to Studio One 4 Pro from Artisti 4
The Dealer is midimusicshop.it and gave me the serial n./product key
So i was in my profile i click on "register a new product" and insert the serial number
but your system says: You need to supply the product key for the software you want to upgrade.
I do not understand. I have the key, i write in...and it don't work!
What's Wrong???
Cisotto DArio