You can update your email associated with your Quizizz account provided there is no account associated with the new email. To know how to go about this, kindly follow the steps below.
Step 1: Click on Settings on the left hand menu bar
Step 2: Here you can update the email and click on Save Changes to save the new email address.
Step 3: After your email is updated successfully, you will be logged out. Just log in again and go back to the Settings page to verify that the change was made.