The ContactUs.com branding appears on our free plans but it’s possible to remove it by upgrading to a premium plan for as low as $20 per month.
To remove the ContactUs.com branding logo, access your ContactUs.com admin panel.
Go to Forms, select your template and hit the "configure this form" button.
You'll be taken to this section. Scroll down and you will find a several options in the form of switches. You will see the "Show Branding" switch. If you want the Contactus.com Branding to appear, leave it "on", if you want to remove it then turn it off.
Watch this video as reference: