Permanent switching off of assistant systems

Hello to the Stinger Fansgemeinde, after having enjoyed my new Stinger for 2 weeks, now the first questions come up :-). I want to say goodbye to one and the other assistant and have turned off the fatigue warning and the track keeping assistant in the settings menu e.g… Unfortunately, it is always on after restarting again. It seems that he does not save my changes or does not assign it to my user? Do I have to go somewhere after change on Save? Or does someone have a tip? A small question, what is the difference between the symbol lane hold assistant (car in the roadway) and the symbol green steering wheel in the display, or the difference function button left lane hold assistant next to the steering wheel and pushbutton on the steering wheel (the same symbol but with steering wheel symbol? I hope to have explained it correctly :-). Thank you already in advance Good driving Ralf