Just noticed this morning that the iOS (mobile) version of Car-Net forced a software update on my iPhone (now version 2.2.1 dated 1/12/17); required a new 8-digit confirmation which the app accepted -- initial screen showed a Beetle convertible icon and then it eventually changed to an e-Golf; still not working all the time (may try the 'disconnect 12V battery' process that a few others have mentioned) but the interface seems to have a changed a bit. As I'm using Verizon on my phone and others already mentioned that the app uses Verizon Telematics not sure what the issues on connecting might be --- as my e-Golf is used I did need to have them change their records which they did; the whole app is klutzy to say the least but haven't quite given up yet --- would be nice if I could get the pre-climate portion to work, we'll see!
The app also added Apple Watch access ---