I received the following from VW on the ID3 owners Group Facebook page when I said that I hadn't yet got an email
"Hi Peter, if you did not receive an email and it is not in your spam folder, please contact our Customer Interaction Center. You can reach our colleagues at the following e-mail address: firstname.lastname@example.org. Please make sure, that your ID. is linked to the We Connect ID. app. Thank you very much !"