It was on mobile. Android pixel 6. Brave browser (which is chromium I think). Great, good to know that beginners can do practice mode. Sorry I didn't explore that before commenting.
dont be sorry, I didnt make it very obvious. I mean there's no landing page or new user walkthrough in this app so im just glad if people find their around
There is in fact a restricted play area: Go to "Practice" and click the filter icon on the top right...you can choose frets and strings to focus on