Hi,
This looks like a problem with your Joomla template.
Try switching to the default template of Joomla and see if you still have the same problem or not.
If not, rename the file templates/YOUR_TEMPLATE/html/com_hikashop/category/listing.php to something else via FTP and that should fix the problem.
Then, contact your template provider to let them know about the problem.
If you still have the problem, please provide a screenshot of the products options tab of the menu item, there might be a problem there.