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There could be several reasons for this issue. Here are some common misconfigurations to check for:
- Ensure that your notification hub name (without typos) is correctly configured.
- APN configuration
- Application issues (Tags and Tag expressions, Templates and invalid registrations)
- Push notification service issue.
You could narrow-down/double-check these configuration.
- Verify credentials.
- Verify registration.
- Verify message nitrification
- EnableTestSend property
- Review telemetry
Kindly checkout this documentation for more details on this topic (explains ways to identify the root cause) with step-step instructions.
Please do let us know if it helps or you need further assistance with this issue we would be more than happy to assist you.
It looks like you had tagged this question as a platform feedback, we have now re-tagged this appropriately.
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