Which Template File for Posts?

I use a page called “Blog” and have set Customizr to display the posts on that.

It doesn’t display the five posts with excerpts as per the Customizr settings.

http://www.naturalblacksalve.com/blog/.

There is nothing in my child theme’s functions.php file.

Maybe you know what the problem may be?

Also can you tell me which template file Customizr uses to display these Blog posts?

Is there a shortcode I can use to display blog posts?

Thanks in advance