The issue is not that all entries are not being displayed. The issue is that the page is not being completely rendered. Notice how the page header is not displayed and missing the page footer.
Generally this is caused by:
- some fatal plugin conflict, very, very, rare.
- fatal php error, rare, but can happen
- php running out of the memory allocated to it, still rare but more common than the previous two, especially on the lesser expensive shared web hosts.
So, my first suggestion, try increasing the memory allocated to PHP. Here’s an excellent blog post which covers several ways to do it. Which method that will work really depends on the webhost.
I suggest starting at the top and work your way down the list.
Hope that helps, let me know.