SMS Passwordless OTP verification code showing @@password@@ instead of the code in the message

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1

I have configured password less login using both email and sms. I have followed thru this guide Passwordless Authentication with SMS and also the Using Passwordless APIs documentation.

I use postman to call the API https://abc.au.auth0.com/passwordless/start
Content-Type: application/json
Body: {
“client_id”: “00999uj3q098dfkhjvdfrYyAmjm”,
“client_secret”: “3VMQZVkT7264riuhnfvhdfvLwyEy”,
“connection”: “email”,
“phone_number”: “abc@mail.com”,
“send”: “code”
}

and I am able to receive the correct verification like 123456 in the email inbox.

However, when I switch to send SMS OTP and change the body like below:

{
“client_id”: “00999uj3q098dfkhjvdfrYyAmjm”,
“client_secret”: “3VMQZVkT7264riuhnfvhdfvLwyEy”,
“connection”: “sms”,
“phone_number”: “+61889908554”,
“send”: “code”
}

I am able to receive the SMS in my phone. However, the verification code is @@password@@ instead of 6 digits number.

I really have no idea what I miss configuring. I have successfully link my Twilio account in my Auth0.

Please help on this issue I am facing. Thanks!