No difference ... 

No article on mobile phone ... 

http://valiselegere.fr/

Thank you for your answer, but now that has created problems ...
you will find on the images the numbers to follow:
On number 1 : When I put the category to display for the "suitcase" menu: it displays the articles overview. But they do not appear in the menu on mobile unless I add them like on number 3.
When we look at number 2, I add the category but I did not add the articles as for number 1. And if we look at number 7! there is no drop-down menu to select the article when we can see that on number 6 the article is present in the menu ??? I don't understand anything about your menu, it is absolutely not clear and simple.
So I would like to know how to have seen articles on computer like on number 4 without having to add articles like on number 3 if I want us to click on articles on mobile number 7.
Because if I don't add articles like number 3, the articles are not visible on mobile ...

Hello,

I have a little problem with the menu. I can not rearrange the elements as I want. When I go to "custom" and go to the menu to rearrange nothing works. So I also do it in the Back Office but it's the same thing.

I also have a problem with the choice of menu appearance. I would like the second menu to be like the first with an overview of the articles.