I am having the same problem. It is very obnoxious and is one of the main reasons that I do not use the lessons as often as I would like.
Screen locking every three minutes while watching lessons.
My chess.com screen just goes into the lock screen after 3 minutes. It doesn't matter what section I'm in. No activity and the screen locks. I've looked everywhere. Maybe in a future update this could be an option. I can't stand it.
I have not been able to find any phone setting that fixes the problem, and I have spent time searching for solutions because it is really annoying. Similar to MatthewLorch, I have had the screen lock show up outside of lessons as well, including during the middle of a game while I am trying to move.
This is an issue with the android phone app.
Whenever I'm watching a lesson video, the screen locks every three minutes. It is very annoying to unlock my screen every three minutes and I often miss information while the screen is locked.
It is not an issue with android system settings. It only occurs while using the chess.com app, and my system settings are set to only lock the screen after 30 minutes.
I've searched the forums and there is no answer on how to solve this issue. Does anyone know how to prevent it from locking the screen during lessons?