Unlocking your Game
Follow these steps to unlock your game:
Hit the "About" tab
Located on the upper right corner of your game window.
Paste your credentials
1- From the email you received select and copy the Email Address. You can use your keyboard by pressing Command-C (Ctrl-C on Windows). And paste it on the upper field on your game by pressing Command-V on your keyboard (Ctrl-V on Windows).
2- Do the same with the Key Code received on the same email and pasting it on the lower field.
3- Hit the "Unlock" button that appears automatically. Or place the cursor over the Key Code field and press Enter on your keyboard.
You are done! 
Email and Key Code fields dissapear and the baKno logo is shown instead with a "Thank you" message.