topmenu position does not accept another module

Hello there,

I have created a site with the help of one page theme but I am trying to make it work as a multilanguage site but the flags are not clickable even if they are links.
Is there something wrong with the z-index?
Please any suggestion would be really appreciated.
Thank you,
Leonidas Rent A Car
for your test

Open:

templates/hot_one_page/js/hot_onepage.js

this line:

jQuery(".scroll, .mp_topmenu a:not(.external)").click(function(event){

modify like this:

jQuery(".scroll, .mp_topmenu a:not(.external):not(.mod-languages *)").click(function(event){