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, iPadOS, and tvOS devices and Mac computers with Profile Manager.
- In the sidebar of the Server app  , select the server, select Profile Manager, then click Configure under Device communication push notification certificate. , select the server, 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.”