It seems basic question.
For example, second account name is
user1@example.com
First of all, I accessed the following URL
1)
http://www.example.com/cpanel
.. and authentication required.
2) I entered authentication information.
Type 1
username :
user1@example.com
password : user1's password.
Type 2
username : user1
password : user1's password.
both failed authentication.
so I can't go next step.
Could you tell me what I mistake??
I created only FTP account, not create e-mail account.
Thank you for your advice.