Ordering propertys bug

Hello,

I have a problem, when i add a property the default sorting of the page is by title.
I want to order default by added date, so that the latest propertys appear first.
But i can't find the setting to do this, in the screen shot you can see that i set de ordering to "latest", no luck.

this is the url:

www.scholopurk.nl/nieuw/makelaardij/woningaanbod

How can i fix this.