This script turns your Zorin OS CORE instance into a Zorin OS PRO instance
PLEASE NOTE: You will not receive support from https://zorin.com/ if you don't like that you can buy a copy
https://github.com/NanashiTheNameless/Zorin-OS-Pro/blob/main/README.md
I tried it and it worked.
I'll give it a shot! Someone on reddit was saying they paid for the pro version and while updates 16.1 to 16.x were free, they had to pay full price for the upgrade to 17.
I use massgrave for windows so I'll be glad to try this out. Thanks.