Some pages/posts not showing up !!!

My site is https://www.ourWorld-Guide.com

There are some pages and posts that do not show up with any content (only a title), but the content shows up when I go to edit them in the dashboard…

For example:

https://ourworld-guide.com/items-list

and

https://ourworld-guide.com/ourworld-jobs-buzz-barista

Is it a page length issue? What’s the maximum page length in WP?
And can using tables have anything to do with it?

My boyfriend works on the site with me but he usually handles the code and technical stuff, but I’ll do my best to post whatever code needed and try to understand.