If you cannot login to your calculator you likely need to reset your password.  To do this please follow these steps:

  1. Visit the login page of the calculator (where it prompts you for email and password)
  2. Next click on “Forgot My Password”
  3. Enter the email address signed up/signed in with
  4. Click “Reset Password” button
  5. You’ll receive a link in your email to reset your password.  Click it or copy and paste the link into your browser.
  6. On the next screen you will be able to enter in a new password and save it.
  7. Then attempt to login again.