I've posted this on the FCM slack channel, but in the absence of any response so far there, I thought it would be worth trying here!
I'm having problems sending test messages from the console.
I've configured my Xamarin.iOS app, and have done the necessary in the app - it's generating the token when the app is first run.
When I use the FCM Console to send a test message, after I've selected my app, the console says 'This campaign targets 0 app user(s) (0% of potential users).'
When I continue to actually publish the message, it appears in the list of messages but with '0' against Sends. And (of course), it's never received on my device. I'm sending to specific devices by entering the FCM tokens in the 'Test On Device' section.
So it appears that the messages are never being sent!
What am I missing? I've previously sent messages fine for other apps.