You need to first select your product (game or app). After you enter the generated cd key in this field. You check your gift code is valid or not.
If the generated cd key valid, then you continue to activating that product key before it is ready to use - redeeming. Activating is easy, you need to complete an easy task from our sponsors and your cd key will be automatically activated. Below you can find detail instructions. Have fun!
Now to activate your cd key, you need to follow the 7 necessary steps given here.