Display Quantity in 'Cart in Navigation Bar' instead of total costs

Hi,

I am looking to display the cart quantity (instead of the costs), and I have added a code snippet based on Tom's previous reply here: https://generatepress.com/forums/topic/show-quantity-in-cart-in-menu-instead-of-total-costs/

function tu_custom_wc_cart_link() {
    ob_start();
    ?>
    <a href="<?php echo esc_url( WC()->cart->get_cart_url() ); ?>" class="cart-contents" title="<?php esc_attr_e( 'View your shopping cart','generate-woocommerce' ); ?>">
        <?php _e('Enquiry','generate-woocommerce');?> - <?php echo sprintf ( _n( '<span class="number-of-items">%d</span> item', WC()->cart->get_cart_contents_count() ), WC()->cart->get_cart_contents_count() ); ?>
    </a>
    <?php
    return ob_get_clean();
}

function tu_custom_wc_menu_cart( $nav, $args ) {
    if ( $args->theme_location == 'primary' && generatepress_wc_get_setting( 'cart_menu_item' ) ) {
        return sprintf( 
            '%1$s 
            <li class="wc-menu-item %4$s" title="%2$s">
                %3$s
            </li>',
            $nav,
            esc_attr__( 'View your shopping cart','generate-woocommerce' ),
            tu_custom_wc_cart_link(),
            is_cart() ? 'current-menu-item' : ''
        );
    }
	
    // Our primary menu isn't set, return the regular nav
    return $nav;
}

function tu_custom_wc_mobile_cart_link() {
	if ( function_exists( 'generatepress_wc_get_setting' ) && ! generatepress_wc_get_setting( 'cart_menu_item' ) ) {
		return;
	}
	?>
	<div class="mobile-bar-items wc-mobile-cart-items">
		<?php do_action( 'generate_mobile_cart_items' ); ?>
		<?php echo tu_custom_wc_cart_link(); ?>
	</div><!-- .mobile-bar-items -->
	<?php

}

add_filter( 'woocommerce_add_to_cart_fragments', 'tu_wc_cart_link_fragment' );
function tu_wc_cart_link_fragment( $fragments ) {
	global $woocommerce;
	$fragments['.cart-contents span.number-of-items'] = ( WC()->cart->get_cart_contents_count() > 0 ) ? '<span class="number-of-items">' . wp_kses_data( WC()->cart->get_cart_contents_count() ) . '</span>' : '<span class="number-of-items"></span>';
	return $fragments;
}
	
	add_action( 'after_setup_theme','tu_remove_wc_cart_item' );
function tu_remove_wc_cart_item() {
    remove_filter( 'wp_nav_menu_items','generatepress_wc_menu_cart', 10, 2 );
    add_filter( 'wp_nav_menu_items','tu_custom_wc_menu_cart', 10, 2 );

    remove_action( 'generate_inside_navigation','generatepress_wc_mobile_cart_link' );
    remove_action( 'generate_inside_mobile_header','generatepress_wc_mobile_cart_link' );

    add_action( 'generate_inside_navigation','tu_custom_wc_mobile_cart_link' );
    add_action( 'generate_inside_mobile_header','tu_custom_wc_mobile_cart_link' );
}

However, the cart quantity in the navigation bar does not update when I remove an item in the cart on the cart page. Will you be able to help on this? (Currently, the cart quantity in the navigation bar updates only when I add a product to the cart on the product page)

Also, how can I add custom CSS such that there's a round circle around the quantity number?

Thanks!