The e-Bill payment option cannot be applied retroactively to invoices that have already been sent. This is only possible for upcoming invoices.
In order to pay the outstanding invoices, any outstanding invoices must still be paid by bank transfer. You will find the necessary payment information at the end of each invoice.
If you are unsure whether you still have open invoices, you are welcome to check this and download the invoices accordingly. Simply open the following link
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