Change a push certificate’s Apple ID in macOS Server
If you previously enabled push notification and acquired a certificate from Apple, you can change the Apple ID associated with the certificate.
WARNING: Changing your Apple ID replaces the existing certificate and disrupts notifications to registered devices. Users must reenroll their iOS devices, tvOS devices, and Mac computers with Profile Manager.
Select your server in the Server app sidebar, select Profile Manager, then click Configure under Device communication push notification certificate.
Next to the Apple ID, click Change.
A warning states that changing the Apple ID disrupts existing push notifications until users reregister their devices with the service.
Read the warning, then click Continue.
Enter the Apple ID and password.
Click “Get Certificate.”