If the user chose "Convenience store prepayment" as their payment method,it is possible you will see sales at the promotional price after the promotion has ended.
hen a user chooses "Convenience store prepayment",the purchase is completed when the user has paid at the convenience store (after the purchase procedure on the site),so if they went through the procedure on the site during the promotionbut paid after it ended, the time of the sale will be recorded asthe time payment was completed.
As such, it may sometimes appear as though a sale at a promotional price has occurred after the end of the promotion.