Im having problems for eg I have set up my categories (in WPPizza) and I have added menu items but I get 404.

I also have a problem that the CSS of the page is messed up on a newly formed category page. my URL is http://carwashcafe.org and the problems I am having are on the Drinks and Breakfasts found here:
http://carwashcafe.org/wppizza_menu/drinks/
http://carwashcafe.org/wppizza_menu/breakfast/
The only one I have working satisfactory is Pizza found here:
http://carwashcafe.org/our-menu/pizza/

I have noticed that the permalinks are different but cant seem to get the new categories that I have made to have the same /our-menu/ url.

Please help!!