Hi, one of the authors here. It was probably not very clear on our part, but it's meant to train the eye tracking model as naturally you use the website. So it takes advantage of your interactions over time, like if you're using Gmail.
So if you're doing the demo on the blank page, click in a couple of places around the screen (while looking there as you would normally), and you should start seeing the prediction.
So if you're doing the demo on the blank page, click in a couple of places around the screen (while looking there as you would normally), and you should start seeing the prediction.