Go to 'Billing' and then scroll down to the 'Add-ons' section. You should see an information box titled 'White label'. Click on the 'Learn more' button:
You'll then see a pop-up where you can opt in to activate the Add-on:
Next, go to Box office settings > Basic settings and check the box next to Hide Ticket Tailor logo.
💡 Buying White label also allows you to connect your custom domain to your box office at no extra cost.