I have an Apple ID and a password that works fine on most things but not my iPhone 4. The address is firstname.lastname@example.org.
But When I start up my iPhone, iCloud asks me to enter the password for email@example.com. As far as I know I have never used this email address as an Apple ID. Consequently I have no idea what the supposed password is.
I have researched your excellent articles about changing apple id addresses but in every case it asks me to log out by entering the old password which I don't know.
When I try to change the password I get the message that firstname.lastname@example.org is not an Apple ID.
In a perfect world all I want to do is completely delete any reference to email@example.com but I can't do that without knowing what the password for that address is. If anybody can help I would be really grateful.