This facilty has been unavailable for at least two weeks, so I can't check my phone calls and bills. It's unusual for anything to be down for this length of time.
Solved! Go to Solution.
try to log in using web browser instead of app
https://www.bt.com/about-my-bt
I still get the same message:
I have tried a different laptop and I can access my account so the problem is with my other laptop.