WooCommerce Thank You Message Filter

// Update the thank you message on the order received page after checkout

add_filter( 'woocommerce_thankyou_order_received_text', 'd4tw_custom_ty_msg' );

function d4tw_custom_ty_msg ( $thank_you_msg ) {
$thank_you_msg =  'This is where you add your custom thank you message';
    return $thank_you_msg;
}