Need to Verify Support with newer WordPress versions

According to the documentation, this plugin has only been verified with WordPress of several versions ago. I’m running 4.9.1 and I’m not sure everything is working as it should. I seem to get data in Woopra reports, but live dashboard never shows anything. My theme has the hook in the header. But there is a comment about seeing (Woopra?) related code in the page. I don’t.

So either there is something that needs to be tested and verified with newer versions of WordPress or I need some guidance on what to look for.

You can look at any page on my blog like this one: view-source:https://jdhitsolutions.com/blog/powershell/5789/who_is_running/