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You’ve paid for a license, but the software is still in demo mode. 


You can’t find where to enter the license key.  


  • Start DNS Expert Professional.
  • In the main window, choose the menu item “Help > About”.
  • click on the “Register...” button in the About dialog. The Product Registration dialog will appear.
  • Enter your license key (preferably with copy and paste) and your name, and then close the dialog box.
Your copy of DNS Expert Professional is now registered.