Onesignal Notifications stopped!

If your OneSignal notifications have stopped working, the issue could stem from several possible causes. Here's a troubleshooting guide to help you resolve the issue:

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### 1. Check OneSignal Dashboard

- Go to the [OneSignal Dashboard](https://onesignal.com/).

- Check the Delivery Statistics for recent notifications:

- Look for errors or drops in notification delivery.

- Ensure your subscription counts (Active Users) haven’t dropped unexpectedly.

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### 2. Verify App Credentials

- Ensure the API Key and App ID in your app's configuration match those in the OneSignal Dashboard.

- If you've recently changed the API key or App ID, update them in your app.

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### 3. Check Device Subscription Status

- Ensure users' devices are subscribed to receive notifications:

- On Android/iOS: Check if users have allowed notifications in their device settings.

- On the web: Check if the browser push notifications permission is enabled.

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### 4. Validate Push Service Configuration

- Android (Firebase Cloud Messaging - FCM):

- Verify your FCM server key and sender ID in the OneSignal settings.

- Check your Firebase project for any errors.

- iOS (Apple Push Notification Service - APNs):

- Confirm that your APNs certificate or token is valid and hasn’t expired.

- Web Push Notifications:

- Ensure your site is using HTTPS (required for web push).

- Check if your web push subscription is active in the browser console.

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### 5. Inspect Error Logs

- Open the Error Log section in the OneSignal dashboard to identify specific errors for notifications that failed.

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### 6. Test Notifications

- Use the OneSignal Test Device feature:

- Add your device or browser as a test device in OneSignal.

- Send a test notification to check if it's working.

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### 7. Debug the App or Website

- Mobile Apps:

- Ensure the OneSignal SDK is correctly integrated.

- Check for any errors or warnings in your app's logs related to OneSignal.

- Web:

- Check the browser console for errors related to OneSignal.

- Verify the correct implementation of OneSignal's JavaScript SDK.

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### 8. Review Recent Changes

- Consider any recent changes that might affect notifications:

- Updates to your app or website.

- Changes to API keys, credentials, or SDK versions.

- New policies or permissions affecting notifications.

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### 9. Check OneSignal Status

- Visit [OneSignal Status](https://status.onesignal.com/) to ensure there’s no ongoing outage.

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### 10. Contact OneSignal Support

- If you’re still stuck, reach out to [OneSignal Support](https://onesignal.com/contact) with detailed logs and steps to reproduce the issue.

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