Passwordless SMS gives "Missing properties: twilio_token" error

I have configured passwordless SMS with a valid Twilio Messaging Service.

However, trying to authenticate (via Auth0 website, cURL, or my app) fails. The request to <my_domain>/passwordless/start etc. returns a 400 with the error {"error":"invalid_request","error_description":"Missing properties: twilio_token"}

I have followed all the instructions per Passwordless Connections and Passwordless Authentication with Universal Login. What am I missing?

Hi @BarthesSimpson

Please confirm your Twilio settings on your SMS connection are valid and as documented here https://auth0.com/docs/authenticate/passwordless/authentication-methods/sms-otp#configure-twilio-settings

Warm regards.

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