If your account balance is not enough at the time of purchase, you can increase your account balance and complete the purchase in the same buying process.

1-After selecting the game and adding it to the shopping cart, click on Checkout on the shopping cart page

2-Now on the Checkout page, you can see the amount of the selected ticket and the payment methods.
You can choose the amount you want to withdraw from the wallet and the amount to be paid by payment methods.