Link are not working on top menu

Hello,

I have installed the template and change some Menu Item Type for the "store" and "feature" of Top menu into single article 'news article 1" and when i click I see the picture bellow in the attached file.



Can you help me please. I am quite beginner with joomla and i wonder why the links doesnt work.

I have also this problem when I click on Topmenu button

404 - Category not found
You may not be able to visit this page because of:

an out-of-date bookmark/favourite
a search engine that has an out-of-date listing for this site
a mistyped address
you have no access to this page
The requested resource was not found.
An error has occurred while processing your request.
Please try one of the following pages:

Home Page
If difficulties persist, please contact the System Administrator of this site and report the error below..

Category not found

Try to change menu items alias in their settings.