hotbuyusa

My prestashop is hosted with fatcow. I have trouble to show catagory at the home page and delete unwanted catagories. The home page actually show one catagory from the subfolder under home and one other subcataggory of a home catagory. I thought it is supposed to show all the catagories under home on the home page and sub catagories will be shown when you click one of the home catagories. It is not this way. Another problem is that when I add new catagory under home catagory. I make sure I check the green check mark on, but it does not display on my webpage at all. Can anyone help me on this? Kevin