Hi, I navigated around your site, changing categories, changing display from grid to list, all worked correctly.
Suggest you try clearing your system cache in admin, and also your PC browser using cntl+f5
often times when doing lots of changes in your site, you need to remember to clear your cache. AbanteCart has a robust caching system to speedup the delivery, works great on the customer end. But can fail to update when admin is making lots of changes..