Go to your customer portal link – from your merchant – Log in
From here the first page you see will be the invoices
Under actions you can choose to process that invoice
When you go to process a window will pop up
If you have a card on file it will populate automatically.
If it is a credit card the surcharging fee will be added which will be known in the total payment field as well as the note warning you.
When a debit card is entered the total payment will not change and the surcharge fee addition warning will go away.
After you process with a debit card or credit card you will see a transaction receipt and can click on the invoice number to view the invoice details