Disable pingbacks and trackbacks in blog posts

The thing is, the default post has both comments and pingbacks/trackbacks enabled by default. And post or page level settings override the site-wide settings.

So, for ONLY the “Hello world!” post (if you are not deleting it), you’ll have to specifically uncheck Allow trackbacks and pingbacks on this page. option which is available when you check the Discussion option under Screen Options menu:

ping/track