Bumping this. Did you ever figure this out? I also have Volume Mode, only Sound Mode. OS is up-to-date.
Unfortunately, no. I thought maybe the functions would appear with a system update, but there hasn’t been one since I posted this.
Just got a brand new TCL 43 inch from Walmart, and it only has Sound Mode with no Night Mode or Leveling options. Anxiously awaiting an update that would fix this, does anyone know if it’s still planned soon?