I have tried for about a year to change my appleid.
When I ask it to change my appleid to an email address I have used for years outside of the apple environment, the system tells me that email is not available. As far as I know, I've never used that email as my appleid or anywhere else in the apple environment.
I have tried to change my appleid to this new one for about 1 year.
So I have two questions:
1) how do I find out where apple thinks this email is being used within their environment?
2) how do I change to this appleid?