Language switcher disappear in mobile version

Hi,

I can’t find language switcher in mobile version of my web.

Link to web: http://unis.4fan.cz/
Desktop version of web screenshot: http://prntscr.com/4iy3e7
Mobile version with opened menu screenshot: http://prntscr.com/4iy3nf

Could you recommend me some way how can I add language switcher to mobile version of a web.

Thank you