Servicenow Single sign on integration

Servicenow Single sign on integration

Hello, I have a problem with setting up of SSO for Servicenow via ADSelfService Plus. I went through the documentation on page https://www.manageengine.com/products/self-service-password/step-by-step-guide-for-servicenow-single-sign-on.html but when I am trying to use external login to ServiceNow using the email address am forwarded to ADSelfService Plus which is showing me error message
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Do you have an idea what can be wrong?
Thanks
Ondrej

                New to ADSelfService Plus?