I have the same question others have asked - we are using the JWT token approach to authenticate when sending notifications. During that process we use a .p8 file to help generate the token. The information about the changes we received from Apple clearly indicates token connections are affected ("On March 29, 2021, token and certificate-based HTTP/2 connections to the Apple Push Notification service must incorporate the new root certificate ..."), but it's not clear how.
rgiffords
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