wc_add_notice does not fire

If have added this snippet to function.php. wc_add_notice error fires except with paypal express checkout plugin. Can you please help me?

// Set a minimum amount of oder based on shipping zone before checking out
add_action( 'woocommerce_check_cart_items', 'cw_min_num_products' );
// Only run in the Cart or Checkout pages
function cw_min_num_products() {
	if( is_cart() || is_checkout() ) {
		global $woocommerce;
		// Set the minimum order amount and shipping zone before checking out
		$minimum = 150;
		$county = array('GB');
		// Defining var total amount
		$cart_tot_order = WC()->cart->subtotal;
		if( $cart_tot_order <= $minimum && in_array( WC()->customer->get_shipping_country(), $county ) ) {
		// Display error message
		wc_add_notice( sprintf( '<strong>A Minimum order of &euro; %s is required before checking out.</strong>'
		. '<br />Current order: &euro; %s.',
		$minimum,
		$cart_tot_order ),
		'error' );
		}
	}

• This topic was modified 4 years, 1 month ago by Steven Stern (sterndata).
• This topic was modified 4 years, 1 month ago by Steven Stern (sterndata).

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