At both school and district level: Please contact us on the matter and ask for your administrator account [support@happynumbers.com], specifying the email you'd like to sign in with and what school/district are you with.
Please wait for one of our representatives to confirm your status as an administrator.
Once your admin status is confirmed, go to our main page [Happynumbers.com] and click the "I'm a teacher" button - by default you will be redirected to your admin account.