I have an App successfully subscribing to a Channel, example 'chat_msg'. I do see it in the Web Console of that ACS in Show Subscribed Devices.
When I send a test Push Notification from the console to All Channels it works (received on device). Though when I select the channel in which the Device has been subscribed to (and I do see that channel in the Subscribed Devices tab), the Push Does NOT go through to the Device.
Is there a bug in ACS?
I have previously implemented this, and yet it has worked. It has stopped working recently with a new ACS I've recently created.