edit page in web builder only small text no banner

I only have see a tiny window to type text into when on the edit page portion of the premium web builder. I don't see my site design or anything that I chose in the previous Design portion. When dragging a script onto the page it won't drop it because it appears my page is not there. I am a first time web page creator. When I hit preview I see my site design. When I look up how to add script it shows dragging and dropping from the edit page and it shows the web page with it's design in the screen. Mine has only white with a little text box in the corner. Help?

Thank You