I just saw this option while i was revamping my comic’s cover/etc.What are you supposed to put there? Like a patreon/kofi link, or is it an ad for the comic that is shown elsewhere?
the custom add banner allows for you to plug link to any of your own sites like other social media, patreon or ko-fi as you mentioned it'll be shown i think below your comic updates on desktop and mobile and readers can click it if they so choose
Thank you very much for answering!!