Step::1 Login to your Redserverhost Client area.
Step::2 On the menu bar, click on Billing and select “My Invoices” option.
Step::3 Click on the Unpaid button to view the invoice.
Step::4 Once you are able to view the invoice simply go to Payment method and choose PayPal.
Step::5 Click on PayPal check out icon and wait while it redirect you towards the PayPal page.
Step::6 Enter your number or email linked with your PayPal account and complete the payment process.
That's It !You can go through in detailed procedure with the video tutorial. You may check out the blog as well.