The outstanding bills can be confirmed by clicking on "Check outstanding bills" [未払い料金の確認], 8 to 10 days after the payment due date.
In addition, if you want to verify whether your payment has been completed after paying the outstanding bills, you can check it at "Check Payment status / Payment" [お支払い状況の確認/お支払い]from the next day after payment.
< Image of schedule for outstanding bills confirmation (Example of when payment due date is the 25th) >
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