I recently changed my Posts page and now it will not display. There are 2 possible things that might have caused this. The first thing I did was change from using text to using page builder on the site. Unfortunately, I didn’t view the page before doing an SEO check and changing the URL of the page. At this point I tried to view the page and got a 404 error.
So I used the Redirection plug-in & 404 error went away.
However, although the correct page URL displays in the address bar and the navigation appears to work correctly, there is no page content – only the content of the latest posts.