Hi Matt, Thank you for your response. As I understood from your above response is that if we upload a new certificate for Apple Pay then the payments through the old certificate will no longer work. If we upload a new build with a new certificate then it may take at least two days for approval and may take around 1 week for the majority of the users to migrate to the new build. So many users will not be able to use Apple Pay and will receive errors. Can you suggest the best approach for updating the certificate without affecting the existing users?