no products are shown in the list

[selmi8]

Good Morning.

I have a very large tree of categories and to make the "views" is failing me and not hit upon to know why. 

 

From the menu when I enter a category, such should be the gourmet menu of subcategories and products, as shown in the capture "vista-gourmet".

 

When you click on any of the subcategories, "firsts" or "seconds", the next page should look like the catch, but showing the categories themselves, HOWEVER, shows me the list of categories, but no product, indicating that although XX has products such as capturing "vista-gourmet-primeros".
 

And if I click on any of the final category, instead of showing the list of filtered products, it leads me to a blank page.

Also in the category Home, which depend all other categories, and the category of special diets having two "main" categories, also shows me the list of products as in the case of the subcategories.

 

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I think it might be that, with all these categories, the value of any variable product has lossed, does that could be? how I can fix it?
 
A greeting and thanks !!