I’m trying to make communication notifications work with the remote push notifications I have set up, specifically so that I can get user avatars to appear in the notification. I have successfully set up a Notification Service Extension for my app, which I’ve verified works (breakpoints hit in the NotificationService class, and I’m able to modify the title), and by following guide, I end up with this code:

Apple documentation states:

I am currently facing an issue with push notifications in my backend system. I am able to send multiple push notifications to a user’s device. However, only one notification appears on the end device, and the rest seem to be lost. I would like to understand how I can ensure that all the push notifications are displayed on the user’s device.