BMW ConnectedDrive Site

I have tried on numerous occasions to update my CR card details so that I can extend my RTTS. I am unable to do so and receive an error message which asks me to send an error report. I have done so and reported this issue to the ConnectedDrive call centre. They are unable to resolve this issue. But I did get some advice "remove my vehicle from the site".....tried that in desperation and guess what...another error message! What should have been a simple process of updating my CR Card details has turned into a very bad customer experience