icons and menu bar disappear on mobile devices

Hi, before last update of unicom theme some icons and the menu bar disappear on mobile devices, also not in all pages. you can see some page with these issue like this: https://arregloadomicilio.com/reparacion-y-servicio-tecnico-hornos-tenerife/.
As i said before: we have this problem before to update to last Versión: 2.7.1 of UNICON theme.
Now we have installed Versión: 2.7.1 Unicom, wordpress Versión 5.3.2 and php 7.3.

Attached a couple of screenshots

thanks in advance for your support.

Ticket