Lightbeam not working

I installed Lightbeam.
My screen was initially filled with little white triangles and icons connected by lines in the Graph screen.
Then I clicked Reset Data.
All the icons and triangles and lines disappeared. They’ve never come back. The graph would not repopulate. Lightbeam no longer works.
Now what?

Hi there,

Reset data would have asked for your confirmation like the way from this screenshot.

To re-populate the graph, you need to build your browsing history and then Lightbeam will show the network of first and third party websites.