itch.io

Did you play online on itch?

If not, then can you send me a Screenshot of your game's menu and your Save file?

Save file location on Windows:
Folder: %appdata%\Godot\app_userdata\As expected of the Demon Lord'
File: game_save.json
You can open the 'game_save.json' as a Text file.

Yeah also did you only play with the updated game version in that save, or did you also play before the update?