I have PrintKey V5.10 free.I want to buy it. How do I buy it so the money goes to the developer? Do I need to uninstall what I have now before installing the purchased version?
You can buy the application from its official website. To check if you can register the application from the main menu please go to HELP > Register or Activate. If you have these menus then it's not necessary to uninstall it as you can perform registration from these menus.