Hi @COOLmoeD,
So to enable push notifications you will definitely need the certificates that apple give you for in-house, ad-hoc, development, production, etc… just to be able to send push notifications to IOS devices that’s the way it is, also you’ll need an ID from GCM or FCM as well for Android devices and then you can use Mattermost Push Proxy to connect your MM instance to it and get the notifications.