1. Log in to your account.
2. Click on the Shop button on the Account Panel (the bar where you can see your rank, crystals, etc.)
3. Scroll down to see offers - not all items can be purchased using Tankoins. Exceptions are bundles, premium account and Tankoins themselves. Make sure you have enough Tankoins to purchase something before you try. There is a Tankoins section in the shop - here you can buy Tankoins for items.
4. Choose an item
5. Click on the buy option
6. If you have enough funds and everything goes correctly, you should get a screen such as down below. The Tankoins used in the purchase will also be subtracted from your total Tankoin balance.
Got payment issues? Check Failed Payment Transaction.
Customer support service by UserEcho