Update 3/27/2015:
I wanted to use my cable earlier this month to a reset drain counter on my Golf, impossible to communicate with the onboard computer.
I did a test with my second car, same result.
I contacted the seller MARSODEAL in which I bought 15 March and restarted on 23 March.
To date, I still do not have even that a response from the seller. There has unfortunately sellers (as craftsmen) that once the sale is concluded unreachable; MARSODEAL one of them.
I will contact the Amazon customer service to file a claim against the seller.
I strongly advise against buying items at the seller !!!