Utter_subscribed in rasa playground example not getting invoked

Tried out Rasa Playground

Was expecting utter_subscribed to kick and provide one of the below utterance

utter_subscribed: - text: | Check your inbox at {email} in order to finish subscribing to the newsletter! - text: | You’re all set! Check your inbox at {email} to confirm your subscription.

In a quick test, once the email is given, there is not next step. what else is required to get to the utter_subscribed step? the screen of interaction attached