Hope you all are doing well!
We are currently facing the same issue as described here: https://github.com/expo/expo/issues/8250
Single users get up to 10x times the same notification when sending a single notification to multiple users at once.
The issue says:
It seems that it only ever sends multiple notifications to each person, if we try to send notifications to more than one user.
We would like to continue to send batch notifications - 100 users per request - but because of the issue we are forced to send 1 request per user.
Is there any chance you could take a look why this is happening only when sending multiple a single notification to multiple users? So far the users that complained were using IOS. But as most of our users use IOS I don’t know if that is representative.