I have a problem with my category pages. When I try to go on a category page like "Paintings" directly via URL the home page is being displayed. But when I'm on the Home page and then click on Paintings the right page I get the right page.
Just try it by going to http://jannikott.de and click on e.g. Paintings. When you are on the page simply refresh it and you'll see the home page.
Would be great if you could find a simple solution.