You can use the [Order] function in the account icon on the upper right corner to manage your orders that have not yet completed the payment, or directly check the order you want to continue payment to get more V-points in your account.
After you complete the payment, the Receipt and eGUI of the transaction will be sent to the mailbox of your account. You can also download the Receipt details or eGUI of the paid transaction through the [Receipt] function in the account icon in the upper right corner.