bought the game (pc) its not working !!??

This is not working !!!! bought the game (pc) its not working !!??

Installation / Activation through Battle.net

Go to http://battle.net
Log in with your username / password (create one if you don't have one)
Once logged in, click the "Account" tab in the top right corner
On the new page, select "Add a game key"
A window will prompt you to enter the code you purchased on Gamesplanet
After a few minutes, Battle.net will authenticate your code
The game is now visible in your list
Click it to start the download