Check your topic list on firebase console.
Read moreHow do I send notifications to all devices?
Push notifications for FCM
Read moreHow do I send push notifications to multiple users?
STEP BY STEP:
Read moreHow do you send notifications to specific users with FCM in Postman?
Steps to send FCM throw Postman: URL to send: https://fcm.googleapis.com/v1/projects/projectid-34543/messages:send.
Read moreHow do I send FCM notifications to multiple devices?
Set up the SDK
Read moreWhat is FCM device token?
Firebase Cloud Messaging (FCM) is a messaging solution that lets you reliably send messages at no cost to both Android & iOS devices . Using FCM, you can send data payloads (via a message) to a device for a specific application. Each message can transfer a payload of up to 4KB to a client.
Read moreWhat is FCM token in iOS?
Getting FCM token By default, the FCM SDK generates a registration token for the client app instance on initial startup of your app . Similar to the APNs device token, this token allows you to target notification messages to this particular instance of the app.
Read more