Have you tried a landing page WP theme? That might be a better alternative to a plugin.
Thanks guys, point is vendor from clickbank gave me landing page for their product. I want to upload that landing page to my website but still I have no idea how to do it. Maybe you guys from above already answered my question but I guess I am not smart enough to understand. I don't want to make new landing page, I want to upload mine if it's possible. Please replay if you have idea what am I talking. Thank you all who tried to help me!