Android 10.1 is "broken"... 91 days without patch or update? Debbie's punishishments don't work. Also cannot get discipline above 50. (Android 11) See Rudolf S posts.
The game is not broken. I just checked it through on Android and had no problems with Debbie's punishments. To get Debbie to level three you need to buy the paddle and also convince the school board to let you take the girls skirts. Follow Sally's quest log to unlock new punishmnet actions.
Also discipline is capped at 50 until later in the game. Just follow the main quest in the quest logs.