I'd like to submit a bug report. After some extensive testing, I've discovered that setting the music slider to 0 will basically break something in the settings.json file, basically wiping the save. I'm assuming the same would be true of the other two volume sliders. I do not know anything about programming, let alone in godot, but I figured I should pass this along in the only way I know how. Now that I know, it should be a simple affair to actually play and have my progress saved. Can't wait to actually play this again.