Suddenly Google maps, Language switcher, Menus and Page title don't work

Hi,
I am using WordPress 4.3.1 running Highend Child WordPress theme, Version 1.0.0.

Everything worked fine until today, when I noticed the Google maps on the top bar does not work (doesn’t open map), the page title has changed in size (and I’m unable to correct it either in the Highend Options or by over-riding and customizing the title on the actual page) the Language Switcher on the top bar doesn’t work and the Menus no longer show submenus…

What’s going on? Any help would be greatly appreciated.

Website: http://www.dunev.com

Thanks.