How to make CQWP retrieve 4 most recent Items in the whole site collection?

I'm a little stuck with one of m Content Query Web Part:

On my homepage, i would like to display the 4 most recent items added to my site collection in a Content Query Webpart called "What's new?" So it could be from any content type (document, custom Content type...)

So, i've added a cqwp on my home page, in the Query, i've selected "display elements from all sites of this site collection", let blank "List type", and let "All Content Types". in presentation, i've ordered by "Created[_Hidden]" (i have nothing else) and set the limitation to 4...

And yet, nothing is displayed, but all my elements are published. I don't understand.

Do you have any idea on how to display the 4 most recent Elements of my site collection, please?