[resolved] New website. Main page and menu do not show on Joomla

Hello,
I've installed Mobile Joomla for the first time on a 2.5 version. Last time I tried it on a 1.5, it worked like a charm.
This time, it can display the aboutus page without problems (it's a very simple page) but it returns a blank page when I try to open the homepage. The menu doesn't show either.

Here is the link, any feedback would be welcome
www.oipfdev.etsiqa.org

P.S.: would the problem be fixed installing the Elegance Template?

Thanks,
R.

I clicked on links in the following order and homepage works well (my actions are drawn in red color):

Hello yesterday I finally managed to understand where was my problem.
The Mobile Menu module was disabled. Now I have to work on the look of the website on mobiles. Thanks for your help.