I am very happy with Push Notifications using FCM but currently, FCM has been update to HTTP v1 and I saw that MongoDB Push Notification still using the HTTP. With HTTP, I can't send an image in the notification payload (https://firebase.google.com/docs/cloud-messaging/android/send-image), also the data payload is different when I send message directly from FCM.

I hope that MongoDB have plan to migrate Firebase Cloud Message from legacy HTTP to HTTP v1 (https://firebase.google.com/docs/cloud-messaging/migrate-v1)