Please check your mail for the code (can check your spam mail as well).
1. Go to "Redeem Wargaming code" https://na.wargaming.net/shop/redeem/ in the World of Tanks Premium Shop.
2. Enter the code and then select "Redeem".
Please Note :
The World of Tanks Roll Out cards come pre-loaded with gold and are not designed to be purchased via the Gift Shop. Upon redemption, you will receive the following amount of gold in-game: $25= 5,342 Gold