Android users not receiving notifications reliably

[alalfakawma]

I have this issue in production where Android users specifically are not receiving notifications properly. iOS on the other hand receives notifications each time they are pushed. I have them running in batches in the background with a delay for each job. This makes sure that the Expo API is not bombarded with requests, all jobs pass without any failure, meaning, the notifications are sent through.

I have also manually tried to send a notification to a specific android device, subscribing only that device to a channel, but it never goes through. Even though the response status is OK. Any thoughts on this?