Getting email on iPhone after a password change

We had to change our password after it appeared someone had breached our account.  Now when I try to get email on my phone, it will not load the new emails.  I've tried all the instructions on the website, but get the message "The POP server "imap.cox.net" is not responding. Check your network connection and that you entered the correct information in the "incoming mail server" field.  Which I've entered imap.cox.net as well as our new password.  The outgoing is saying the account is verified, however.  What am I doing wrong?  Thanks!