It charges at home fine, seems to be just the motorway ones. When I first had the issue I used the charger and it flashed yellow so I moved the car and luckily for me another e-tron took the spot and charged fine so makes me believe its the car thats the issue and not the charger.
I've tried that and they said to contact the dealer for rejection to which they won't accept it. Not sure on what I can do now.