add_action(\'template_redirect\', \'woo_custom_redirect\');

function woo_custom_redirect($redirect) {
    // HERE set your product category (can be term IDs, slugs or names)
    $category = \'subscription\';

    $found = false;

    // CHECK CART ITEMS: search for items from our product category
    foreach(WC() - > cart - > get_cart() as $cart_item) {
            if (has_term($category, \'product_cat\', $cart_item[\'product_id\'])) {
                    $found = true;
                    break;
            }
    }

    if (!is_user_logged_in() && is_checkout() && $found) {
            wp_redirect(get_permalink(get_option(\'woocommerce_myaccount_page_id\')));
            exit();
    }
}