Debugging Inconsistent FCM Push Notification Delivery in a Mendix PWA

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Hi everyone, We're looking for some guidance on a push notification issue in our Mendix PWA. Context: Application: Mendix PWA (with profiles for both mobile and web). Service: Firebase Cloud Messaging (FCM) for push notifications. Status: The implementation is complete, and we are in the testing phase. The Issue: We are observing inconsistent delivery of push notifications. While our Mendix backend consistently reports that messages have been successfully sent to the FCM API, a significant number of these notifications never arrive on the target devices. What We've Verified: Mendix to Firebase: The API call from our Mendix application to Firebase returns a success status for 100% of the messages sent. Firebase to Device: This is where the failure occurs. There is no discernible pattern to which messages fail to deliver. They simply don't arrive and we don't see any corresponding errors in the Firebase console. Our Question: We are trying to understand why messages that Firebase accepts are not being delivered. What are the recommended steps for debugging FCM delivery status after the initial API success response? Are there common configuration pitfalls (e.g., APNs/Android settings, TTL, message priority) that could lead to this kind of silent, intermittent failure? Has anyone else experienced this with the Mendix push notifications module? We'd be grateful for any insights or suggestions on how to troubleshoot this further. Thank you!
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1 answers
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Hi Rick,

Push notifications work on browser background, after sending notifications switch on the browser new tab then wait 5 seconds you will get the notifications.

 

You can refer the below article 

https://medium.com/@mohammad.saqib_1262/web-push-notification-in-mendix-a-comprehensive-guide-9043e0ab5bbf

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