Menu does not change language on mobile version

Hi

First of all thanks a lot for creating this great plugin 🙂

I have a problem with the menu in my website’s mobile version. The menu appears all the time only in English. When I switch to Polish version the page does change to Polish language although the menu still stays in English.

Do you know maybe how to resolve the issue?

The link to the website: http://www.life-zone.pl

https://wordpress.org/plugins/wptouch/