You are facing an issue that the Push Notes are neither coming in as notifications nor coming into the messages feature. You have tried generating a new Push Certificate with the Bundle ID, but that didn't work either.
- Republish your app if it has not been republished in the last 3 months
To check when your app was last published, follow the steps in this guide.
- Add us as admins on App Store Connect, so that someone from our iOS Uploads Team can rebuild the Push Certificate.
- Open a Support ticket and request that our iOS Uploads Team rebuilds your APN
<supportagent> Request the iOS Uploads Team to rebuild the Push Certificate through a new support ticket, as per Routing Table. </supportagent>