Language Module Not Showing on Subdomain

Hi,

We are having an important issue, here is our website structure:

We are building a quite complex ecommerce website with MijoShop and we are using GK templates to achieve what we want as a final result.

Our main website template is GK Music since we are also using Jomsocial as our community extension. Additionally, our website is designed to operate as a multi-shop ecommerce website, each shop will have its own template, we are using Virtual Domains to achieve this, also, each shop will be available under a sub-domain, our main domain is http://www.mauriresto.com and all sub-domains will be like http://subdomain.mauriresto.com.

Now, we have choose GK Restaurant, GK Coffe and GK Black & White to be our sub-templates, however, when we place these templates on sub-domains, we cannot see the default language selection of Joomla! We have placed the language module in the default 'lang' position on each template, when we used firebug, the module seems to be there but it is not showing on the website frontpage!

Here is a link to have a better idea http://simlaway.mauriresto.com/en/ as you will see on the top, left of the login position, the language module seems to be there but neither the flags nor language links are showing.

Hope I was clear enough for you guys to have an overview, if you need access to ftp and admin area, please let me know and I will send by private message.

I've opened attached URL and see the language switcher module, please just look http://d.pr/i/9yFs maybe I don't understand where is the problem, could you confirm this view ?