I realize there was a question about allowing multiple servers to send Push Notifications to the same application using the same SSL Certificate, but my question is differen
Actually you can create only 2 apple push certificates for one App ID and no more.
Apple developer center does not allow me to create more then two and same experience has my friend. I don´t see how your task can be solved now. In my opinion Apple does not want to support such products. Maybe you can do more with Enterprise Developer account but I don´t have one. So maybe anyone else can tell us if it allows to create more push certificates for on iOS application.