Mobile menu doesn’t work on mobile devices (it appears but nothing happens when you click it). It also doesn’t work in the mobile preview in the customiser. I’ve tried switching the menu as well as creating a new menu.
We just looked at your web-site and see that problem comes from WooCommerce plugin. “Cookies JS” files can’t be loaded from this path http://your-site.co/wp-content/plugins/woocommerce/assets/js/jquery-cookie/jquery.cookie.min.js?ver=1.4.1. Try to fix this first and then mobile menu should work correct :).