Baldur's Gate 3: Can't change stats

I’m currently playing BG3 and wanted to change the stats on my character. I select the character whose stats I want to change, make the changes using alt+ the relevant button, save the game, exit then reload. The stats remain unchanged. Am I missing a step?

Hi, which specific mod were you trying to use?

Edit Last Selected Character Strength, in the free Wemod.

What about the part that says you need to switch character, was that done?