The following steps will assist you in paying using a PayPal account:
1. Log in to the Client Area.
2. Click on the Invoices button near the top of the page.
3. Select the invoice that you wish to pay.
4. Click on the drop-down box at the top right-hand side and select PayPal.
5. Click on the PayPal Check Out button.
This will take you to the payment gateway to proceed with your transaction.