I've an annoying problem after I had installed MobileJoomla!

First of all, I've add a file called "homepage.htm" in my root website to get a different homepage.
Next, I've uncheck in MobileJoomla, this checkbox "Component on home page" for iPhone, to get only the menu on my second page (real homepage for Joomla).

In my website, I've already a few articles. But when I'm selecting one of them as default, this page doesn't appear. The others pages showed up without any problem. The difference between them, is in the URL.

For my default page, I've something that looks like : mysite.com/index.php/fr/?
and for the other pages :
mysite.com/index.php/fr/article1

I tried to change SEO settings, with no success.
Have you got an idea ?
Thank