First log into Haven Connect at havenconnect.com/login .
If you are having trouble logging in please see this tutorial: Logging Into Haven Connect
You should see a page like this, click on the "Update Info" button to open the form page.
Review all of the form fields to make sure they are still current. Once you've changed the information, click on the "Update and Save" button.
That's it, you're done! Click on Logout to make sure that no one else can log into your account.