Please post a screen capture of what you see on your dashboard - in this forum you can paste the image directly into a reply. If it doesn't seem to post, it may require a moderator to approve the post, so be patient if you don't see it right away.
Is this a new install with this problem the entire time, or did it previously display properly and has now changed?
I don't understand what change was made here. What recursive lookup were you using?
From the screen shot you provided, so is the graph of clients (over time). Are you running any sort of ad blocker or content blocker on that instance of Firefox?
Have you cleared the browser cache and reloaded the page? Is the behavior the same on a different browser or client?