The first attempt of connecting an OBD2 interface that I bought from Amazon.de for 25 euros is not working for me. Maybe somebody could help us to solve the mystery of this interface.
Thanks to Michelle P. for all his advice and videos.
In my case maybe it's a faulty device but it is not because this interface works with the Torque Car Scanner Android application.
So, where is the problem?
Later edit: the chip was changed and is no longer compatible with DDT4ALL