BT now expects the user-id to be in email format. I deleted the old user-id and replaced with the user-id it emails me on. You can do this using: https://my.bt.com/s/apps/appsselfserve/index.html#/c...

If BT software had dislayed this in a message instead of "access denied" it would have saved a lot of time.

I don't know when it happened, but just for the hell of it I just tried again and it worked


(Chrome on a Mac)