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 the username on the top right hand of your account to get a drop down list of two options namely Settings & Signout.
Step 2: Please select Settings to go into the "Edit Profile" page.
Step 3: Here you can update the email and click on "Save Settings" save the new email address.
Step 4: 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.