inspiretbb on "[Plugin: Polylang] Language can't change from EN and AR"

I have installed the plugin and am facing a problem.
When i click on the flag it doesn't change!

Here is my website:

English: http://www.bookingsa.net/en/home-1
Arabic: http://www.bookingsa.net/ar/home

https://wordpress.org/plugins/polylang/

hey guys please help me! :(

@Chouby

plzzzz help