If the quiz itself loads but the Submit button never appears, I’d first rule out a theme or CSS conflict before assuming it’s a plugin issue. Open the page in your browser’s developer tools and check whether the button exists in the HTML but is hidden with display: none, visibility: hidden, or positioned off-screen. It’s also worth temporarily switching to a default WordPress theme or disabling other plugins one by one to see if there’s a conflict. Another thing to check is whether any JavaScript errors appear in the browser console, since a script failure can prevent the final navigation controls from rendering. Those steps usually narrow the problem down pretty quickly.