You can make use of available credits in your account to pay an invoice or make a partial payment.
- Login to your Client Area.
- Goto Billing >> MY INVOICES.
- Click on an Unpaid invoice for which you want to make the payment.
- In the new invoice page, you will see your current available credit. Click on Apply credit.
- Now, credit is applied to an unpaid invoice, you can make the differential payment using available payment options like Credit card, PayPal or Bitcoin.