Exclude category from ad display

Hi, you should be able to do that by adding the below code to your theme functions.php file

add_filter( "adverts_list_query", "exclude_advert_categories" );
function exclude_advert_categories( $args ) {
    if( is_page( adverts_config( 'config.ads_list_id' ) ) ) {
        $args["tax_query"] = array();
        $args["tax_query"][] = array(
            'taxonomy' => 'advert_category',
            'field'    => 'term_id',
            'terms'    => array( 103, 115, 206 ),
            'operator' => 'NOT IN',
        );
    }

    return $args;
}

where 103, 115, 206 are IDs of categories you want to exclude.

Thanks for your fast reply!
I have put the code in my function.php file (changing the IDs to suit my needs) but it continues showing all categories on the items-list with no exclusion. Perhaps the problem is somewhere in the way I use the code to show the categories? I put this in my list-item.php file (yes, I know it’s a bad practice, because of the updates…), but I don’t know how to do it in another way.

<span class="category-label">
   <?php $advert_category = get_the_terms( get_the_ID(), 'advert_category' ) ?>
   <?php foreach($advert_category as $c): ?> 
   <a href="<?php esc_attr_e( get_term_link( $c ) ) ?>">
   <?php echo join( " / ", advert_category_path( $c ) ) ?></a>
   <?php endforeach; ?>
</span>

My fault! Your solution perfectly works on the live server, but now I realize that it hides not only the category label, but all the ads added to this category. Actually need to hide/exclude only the category name/label from showing on the item-list. It would be even better if I can hide/exclude it from showing everywhere, but most important is to hide it from the items-list.
Thanks again for the fast replay and in advance for my last question!

Modifying template files is ok as long as you remember to create a child template file and make the changes there, how to create a child template you can learn here https://wpadverts.com/documentation/child-themes-and-templates/