translation from ChatGPT
To activate this mode, you need to set it to the highest priority in the in-game Mod Management Center within Classic Mode, then deactivate it and activate it again. It didn't work for me at first either.

@mmilitia

Can you try again?

（The following is the translation from ChatGPT）
Based on my testing, Classic Mode works fine. However, when you click on Story Mode, the game will prompt you to disable mod modifications, and this mod will be automatically turned off.

After you exit Story Mode and switch back to Classic Mode, the mod will be in a disabled state. Even if you click to enable it, it won’t take effect, because the UI indicates that a restart is required for changes to apply.

You’ll need to toggle the mod off and on in the mod menu. Once the mod is shown as enabled, simply restart the game, and it will work.

** Please don't hesitate to share any issues you encounter. **

working with new DLC but not 100 times stack, 2 or 4 times maybe