WPGlobus and slider of theme MK

I just made a site, http://www.dawsonpartners.nl/coesewijne/, with theme of wordpress called MK. I also use the plugin WPGlobus for different languages in the site. Now everything works fine, except the text in the slider.

When I go the customizer i can fill in the text for the slider and save it, it show al kinds of weird characters, as you can see.