[lindiman]

Which two files you send on that email on mth webpage? .org and which one too?

Franz only need .org

Do you still have that tuning on your car?

Yes of course. Why not ?

About payment. If I registrated once, do I must pay for every car (serial number of the car) for code or no?
Example: I am registred and if i wanna tune car of my friend, do i must pay once again?

Yes, you have to register again. The Keycode is only for one car.