i'm using Windows10, trying to register my product to full version instead of the trial version.. but i've already purchased it before i downloaded it the trial version. how can i get the full version?
You need to go to your emails and find your original reply from Magix with the activation code.
If you don't have that you may have to use the contact button above this thread to ask Magix to resend it to you.
Give them the original email address you used to register the product. They may be able to find your original order. It's important to keep such emails safe or copy the information somewhere for safe keeping and future use.