- Login to the client area: https://www.hzmfr.com/clientarea.php
- Locate the link labeled "Update your details". https://www.hzmfr.com/clientarea.php?action=details
- Under the "My Details" tab, update your billing/contact information. https://www.hzmfr.com/account/paymentmethods
- Click the "Save Changes" button.
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