I do have the VO $ code changed, I did that and the dealership I brought it to also double checked that. I am able to read the ACC module in NCSExpert, I may be able to help you with that. I can send you the updated daten files for ACC. You also may have a german version of INPA, I experienced the german labels too but I was able to get an english version and everything started making sense. Be careful messing around with the ACC module in INPA, there is an option to erase the configuration, and also to erase the adjustment settings (meaning you will have to go to the dealer to get it aligned again).
What is the error code you are getting in INPA? Should be a short string of letters and numbers?
Do you have DIS?