There are two methods to pay the order total amount at one time for Trade Assurance order.
Method 1: Set the order total amount as initial payment (balance payment=0) when placing order or modifying it, and you can make payment at one time via credit card, T/T, Online Bank Payment, etc.
Method 2: Pay the full amount via T/T, even though the contract divides into initial payment and balance. After money arrived, it will be divided into two amounts automatically.