Search only categories

Hi,
I didn’t plan such an option because the product suggestions are the core feature. If you really want to exclude the product from search, you can use the following filter:

add_filter('dgwt/wcas/search_results/output', function($output){
    // exclude what you want from $output
    return $output;
});

or you can set catalog visibility of each product to Shop only instead Shop and search results. It’s a native WooCommerce option.