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