There can be a number of reasons why you are not receiving the authentication code.

  1. Check that the phone number you entered is correct.
  2. Ensure the phone number is 10 digits. Do not include the country code; it's already selected in the prior field.
  3.  Make sure you have a cellular signal.
  4. Contact your phone service provider. Confirm SMS messages are not getting blocked or they may not allow MFA codes/one-time passwords (OTP).
  5. Try another method. If you chose to receive a text the first time, try the voice option instead or vice versa.
  6. Check to ensure you have a stable internet connection.
  7. If you have requested too many codes in one day, you will be limited to seeing just one code an hour.  Wait one hour and try again.