OneSignal postNotification ( user-to-user ) iOS Error



I have 2 applications one client (multi platform) and one server (android), both with OneSignal. The client application has both android and iOS enabled and I can receive notifications sent from OneSignal. However when I try to send via ‘postNotification’ a notification from the client to the server (iOS -> Android) I receive an ‘> All included players are not subscribed’ error, but with Android -> Android the notification is sent without problems.

PS: The server application does not have iOS platform enabled

Sorry for my poor English, it is not my native language