Please note that updating your account contact details does not update your domain registrant/owner WHOIS details. That is a separate process, which you would start in your domain dashboard by clicking on the edit contacts link. If you have trouble, please let us know and we can assist.
The information on tthe Contact Info page is used for future domain registrations, your notifications email address, and is what needs to be authenticated for security if you can't access the account or there's a dispute.
To update your account contact details, please start by logging in to your iwantmyname account.
In the main dashboard menu, click on Account, then Contact Info.
Note that using incorrect or incomplete account information is against our terms and conditions. Additionally, it will make it impossible for you to authenticate yourself as account holder if you are ever unable to login or are required to do so for security.
It is also against ICANN regulations to use incorrect registrant details when registering a domain, and puts your domains at risk of suspension or deletion.