To change your password:
When logged in go to your Dashboard page (Control Panel),
Click on "Your account" (or "User account" if using a phone).
On the next page scroll down to where it says "Need to change your password?".
Then click where it says "New password (optional)" and type in a new password.
Scroll to the bottom of the page and click the "Save changes" button. You will get a pop up text message asking you to confirm the password.
Enter the new password again and click 'Confirm'.
Scroll to the bottom of the page (if not already there) and click the "Save changes" button
If you want to change the email address, follow the same procedure for it on the same page.