Question about Vmax R55 Usain Rolled

Have you also had a disastrous warranty experience with Digitec/Vmax? My R55 has never really worked reliably. It was constantly switching off, engines mega loud, spitting out error messages, E05, E02 etc. Sometimes it worked and sometimes you had to push it home. Sometimes it worked and sometimes you had to push it home. In view of the price, I decided not to accept it and sent it for repair. Now the Hoschis write that it is not a warranty case because of "changes to the parameters". Please? The scooter is already open. What am I supposed to have changed? I am now curious. If necessary, I'll go public and get a lawyer. Were they as Swiss as you regarding customer friendliness?