I set up the action per tutorial - and sending notifications manually via the flutterflow manual trigger works. But having a user triggered notification does not work. It looks like the cloud function is setup, and google cloud logs show that it was executed successfully - but no notification is received. Anyone else having this issue?
SOLUTION: Firestore rules just needed to be updated. Weirdly Flutterflow debugger did not alert me that the rules were outdated after setting up notifications