Quick fixes
- Reload the lesson so the keyboard re-initializes.
- Click inside the typing area to give it focus, since highlighting only follows an active lesson.
- Update your browser to the latest version.
How the keyboard should behave
During a lesson the next key glows and a hand guide shows which finger to use. If you want a refresher on what the visualizer does, see the on-screen keyboard guide.
If it is still not working
Try a different supported browser. If typing also feels delayed, read typing feels slow or laggy.