Fancybox iframe not working in other language

Hello,
Im working with site http://www.mbegroup.lt, using fancybox in menu to display contact form. In Lithuanian, English, German languages box comes up, but in Russian language contact form opens in page.. See http://www.mbegroup.lt, push on mail icon in menu on different languages.
What is the problem? Please, help.

https://wordpress.org/plugins/easy-fancybox/