App Confirmation Code for Email failing

  • Hi

    I have installed the shelly app and it us asking to enable email notifications. However, when I click the Request Confirmation Code button a message is displayed at the top of the screen showing "Error - Sending email verification failed"

    This is a new account created today on a Samsung Galaxy S8+ Running Android 9

    I uninstalled the app and then reinstalled it, but no difference to the error.

    Can anyone help me find what is blocking the email to be sent for verification