I have created a case towards Telldus.
Lets hope they are able to see what's wrong

Still the same problem. 
Do I need to do something more than accept sharing data?

Any idea what the problem is?

Yes. It has been working for over a month.
Logging in to telldus works fine and I can read the sensor values and turning devices on/off
What has been changed is that my email address at telldus has been changed.
I have tried to delete the account and sign up again but still I gett the same error