I am going to be picking up my M3 this weekend. I had read that I should have the Tesla app installed on my iPhone so I can test it out when I pick up the vehicle. I have installed the app but don't know what username and password should be used. I've tried using the same logon information as MyTesla website but it says no account linked. Is there a separate logon for the app or does Tesla link it after I pick up the vehicle to allow me to use the app with my existing MyTesla logon?