APNs Auth Keys created on or after Nov 10th can only be used to send notifications to either sandbox or production environment, not both.

We are aware of [changes](https://developer.apple.com/documentation/usernotifications/establishing-a-token-based-connection-to-apns#Team-scoped-keys) to Apple's APNs auth key system that are being implemented on Nov 10th affecting only new auth key creations. We are working to mitigate any issues. In the meantime, developers of new iOS apps are recommended to keep their sandbox and prod app versions in separate apps so they can use separate APNs auth keys as required by that change. We recommend that existing apps avoid creating new auth keys until we have a solution. Again this change only affects new APNs auth keys created on or after Nov 10th.