Step 1:

Click "Chek out with Paypal" and continue with your purchase

Step 2:

Enter your email, then look for your confirmation message and copy the code.

Step 3:

Log in the game with your account and open the Premium Store, then click the "Coupon" button and paste the code.

Having problems? contact us:

Step 4:

And that's it, now you can enjoy your premium coins!