hi there!
There is a line of code that fires at the end but there are some issues if you are using ad blockers (even though it doesn't use ads) or use a limited browser like opera. Are you using either of those? Failing that have you tried playing it again but open up your browser prior to starting? I would also suggest leaving the mouse & not clicking just in case the game thinks it is still being interacted with (although this isn't the suspected case). After you get your results, you should then be able to tab back to the game to carry on at another section.
Let me know if either of these work or don't work & feel free to reach out to me on twitter as that is where I am mostly active.
Hope this helps!