After making your Battle.net Games Key purchase on Uquid, you will be given a digital 16-digit number. To activate a Battle.net Games Key and begin using it to play your favorite game, follow these instructions.
Step 1: Open the Blizzard website - www.blizzard.com and log in to your account.
Step 2: Click on your account nickname at the top-right of the page and choose "Account settings".
Step 3: On the Account settings page, on the menu on the left select "Account Overview".
Step 4: Enter the code you have received from Uquid in the "REDEEM A CODE" window.
Step 5: Click on the "Redeem Code" button. Now you can download the game and enjoy it!