Password Reset Link via API not sent

I have followed the instructions here

Using the .net Auth0.ManagementApi library I send a PasswordChangeTicketRequest which appears to send successfully without exception. However no email is received.

The full process is to,

UserCreateRequest > VerifyEmail = false, EmailVerified = false
PasswordChangeTicketRequest > Passing id of created user and MarkEmailAsVerified = true

Any advice gladly appreciated!