I am trying to download the AGL APP for the first time on my iphone.When I go to register the AGL account I get tthe following message "This account is already registered with a different email address, Please check your email address and log in again." I am not aware of registering this account before, also I cannot think of any other email address which would have been used. How do I register my AGL account? or change the email address to the correct one