Now your new email address will be kofimanu@vodafone.com.gh. Check your 4u.com.gh mail account for your new password.
It is mandatory that after first login you change your password to a more secure one.
From the Vodafone website i.e. www.vodafone.com.gh, under login to Vodafone, click my webmail.
Enter your username and password given to you by Vodafone (or obtain from 4u.com.gh mailbox).
Then click login to webmail. Two boxes will appear, one for new password and the other for password confirmation.
Enter your new password and enter the same password for confirmation, then click login to webmail
E.g.
From www.vodafone.com.gh> Login to Vodafone>My Webmail>
Username: Kofimanu
Password: yazz12 (obtained from 4u.com.gh inbox, or confirmed by callcenter or retail shop)
Click login to webmail,
New and confirm password boxes appears
New password: Anm.fc123 (password of your own choice, must be 8 characters, contain a capital letter, numbers & special characters)
Confirm: Anm.fc123
Then click on login to webmail
NB: Always logout after use