Breadcrumbs and Main Category

Hi,

Sorry for the misunderstanding. I thought there was a sidebar widget that allows you to filter categories. If you need to include the parent category in the breadcrumb trail, please try adding this filter to the functions.php file:

function avia_breadcrumbs_trail_mod($trail) {
    if (get_post_type() === 'post' && is_single()) {
        $categories = get_the_category();
        if (!empty($categories)) {
            usort($categories, function($a, $b) {
                return $a->parent - $b->parent;
            });

            $parent_category = $categories[0];
            $category_link = '<a href="' . get_category_link($parent_category->term_id) . '" title="' . esc_attr($parent_category->name) . '">' . esc_html($parent_category->name) . '</a>';

            $newtrail = array();
            $newtrail[0] = $trail[0]; 
            $newtrail[1] = $trail[1]; 
            $newtrail[2] = $category_link; // Parent category link
            $newtrail[3] = $trail[2]; // Child category link
            $newtrail['trail_end'] = $trail['trail_end'];

            $trail = $newtrail;
        }
    } 

    return $trail;
}

add_filter('avia_breadcrumbs_trail','avia_breadcrumbs_trail_mod');

Best regards,
Ismael