Hi,
In our DEMO and in your website, you should open the Virtuemart Frontpage to see the Categories and the "Top10, recent products, etc.". sliders.
To reach your Virtuemart Frontpage, you can either type this URL:
ROOT/index.php?option=com_virtuemart
(which will be lack of itemID, so not recommended)
OR
Create a menu item and select its"menu item type" as "Virtuemart Frontpage"
So that menu item will be linked to your VM Frontpage where the categories and the sliders are exist.
See the screenshot.
Forum Support.