# Notifications Not Working on Android

### Possible Causes and Resolutions

#### **Firebase Certificate Key File Revoked or Invalid**

**Cause:** The most likely issue is that the Firebase certificate key file used for notifications has been revoked or is no longer valid.

**Resolution:**

1. **Check Key ID in Firebase Console:**
   * Go to the Firebase Console.
   * Navigate to **IAM & Admin** > **Service Accounts**.
   * Verify that the key ID for the relevant key file is present.
2. [**Generate a New Key File**](/publishing-apps/publishing-to-the-google-play-store/generate-and-download-private-key.md)**:**
   * If the key ID is missing or invalid, go to the **Project Settings** in the Firebase Console.
   * Click on the **Service accounts** tab.
   * Click **Generate new private key** to download a new JSON key file.
3. [**Update Adalo Build Settings**](/publishing-apps/publishing-to-the-google-play-store/get-your-build-file.md)**:**
   * Log in to your Adalo App.
   * Navigate to **Android Build Settings**.
   * Upload the new Frontend google-services.json(Config File) and Service Account Key google-services.json.
   * Save the settings and trigger a new build of your app.
4. **Test Notifications:**
   * After deploying the new build, test notifications on Android devices to ensure they are working properly.

## Additional Troubleshooting

If the issue persists even after updating the Firebase key file:

1. Ensure that the Firebase Cloud Messaging (FCM) configuration in your Firebase project matches the setup in your Adalo app. 
2. Consult the [Adalo Documentation](/actions/notifications.md) for any missing steps or requirements related to notifications.

## **Still Need Help?**

If you are still unable to resolve, reach out to our [support team ](https://info.adalo.com/submit-a-support-ticket)for further assistance with the details below.

1. Include Steps Taken: Let us know what troubleshooting steps you've already tried.


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