editor doesn't always seem to work properly; a lot of times, I find myself a player that's not the one I selected.
make sure you are in training time of the day
use the option to freeze the day timer
click the portraits button upper left
right click on the single player portrait
immediately press the key to affect that player
if that doesn't work I have no other suggestions. try a different trainer for this game..
trainer work with steam & gamer gates ??????????? 🤔
It says Retail/Steam in the trainer description so I am going to say yes, it works with Steam.