The eight things reviewers reject listings for, fixed in an afternoon.
A listing sends people to your page once. These are the things reviewers and visitors reject a page for, and all of them are an afternoon's work.
Above the fold, without scrolling, on a phone. This is the single most common reason a submission is bounced back.
One button, repeated down the page if needed. Two competing calls to action halve both.
Not a resized browser. Tap targets, keyboard behaviour on forms, and the actual load time on mobile data.
A real contact route, a privacy page if you collect anything, and a working footer. Several directories check for these before listing.