I seriously doubt your $7 cable is going to do the job.
You are already running into software and comms issues.
Most of these stories end up in much frustration and wasted time and money.
Even if you were to register VCDS Lite, you'd be 1/3 the way to the cost of a real cable, and it still may not work.
Problems with non Ross-Tech cables should be directed to the vendor who sold them.
2012 A8L 4.2 Oolong/Titanium. Premium, LED, Driver assist, Rear seat comfort, Dual pane, Alcantara, Panorama