Menu2Panel not working in article view pages

Hi,
I really like this module, but I am having some problems with it in my page ( plaentxia.net ).
I use it so that the normal menu module is displayed when the screen's width is over 800px, and when the width is lower than that the menu2panel module is showed instead of that one.
The module works fine, but when you go to an article view page there is some kind of problem with it.

I've noticed a difference in the html code of the page when the module doesn't work.
Normally, the "nav id="mmenu-left" " tag is inside the "body" tag and above the "div class="body mm-page" " tag.
When it doesn't work, the "nav id="mmenu-left" " tag is inside the "div class="body" " tag, where the menu2panel module is placed. Notice that, in this case, the "mm-page" class doesn't appear in the "div class="body" " tag.

No changes have been made in any of this modules' files, and the only thing I did to change its appearance was to add these lines in the template.css file of the webpage:

.mm-accelerated footer,
.mm-left footer,
.mm-opening footer,
.mm-opened footer{
display: none;
}
div.mmenu_wrapper{
display: none;
float: right;
}
div.mmenu_wrapper a{
position: static !important;
height: 32px !important;
border-radius: 2px;
background-position: 7.5px 4px;
}

@media screen and (max-width: 799px) {
div.mmenu_wrapper{
display: block;
margin-right: 10px;
}
.mm-menu.mm-left{
width: 330px !important;
}
html.mm-left.mm-opening .mm-page,
html.mm-left.mm-opening #mm-blocker{
left: 330px !important;
}
}

What can I do so that it is well displayed also in the article-view pages?

I add an image to show what happens in the article view page.
The menu2panel module is displayed there as a wrapped menu, but the "nav id="mmenu-left" " element is also automatically showed. When you click on the wrapped menu nothing shows up, as the menu is already visible. That's the problem actually.

Could anyone do something about this?

That's the point. It works fine everywhere except in articles, and I think that in the video you are in the homepage.
Just click the first article link so that you go to the article view and you will clearly see what the problem is.