Hi I have been using the elite for couple of month and everting is fine. But today when I tried to launch the mercedes app it comes a message window said authorization check fail error code 2. How can I fix this problem up? And another question is when I tried to program bmw f serious, it said no communication between the tablet and the veihcle. I have correctly connected both USB and ethnet cables. Can anyone help me pls. Thanx a lot.