How do I fix "Invalid Credentials" errors for Web Push (Chrome/Firefox) notifications?

The "Invalid Credentials" error for Web Push platforms like Chrome and Firefox typically indicates a mismatch between the credentials configured in your Pushwoosh project and the corresponding Firebase Cloud Messaging (FCM) project.

To resolve this, please follow these steps:

1. Verify Web Push Private Key:

   • Log in to your Firebase console and navigate to the specific project linked to your application.
   • Go to Project settings > Cloud Messaging.
   • Under the "Web configuration" section, find the "Web Push certificates" and generate or locate your VAPID key pair (Private Key).
   • Ensure this exact Private Key is correctly entered in the Web Push configuration settings within your Pushwoosh application.

2. Verify Sender ID:

   • In the same Firebase project settings (Project settings > General), locate your Project number.
   • In your Pushwoosh application settings, ensure the Sender ID field exactly matches this Firebase Project number.

3. Confirm Correct Project: Double-check that you are obtaining the Private Key and Project number (Sender ID) from the correct Firebase project that is intended to be used with the specific Pushwoosh application receiving the errors.

After confirming and updating these credentials in Pushwoosh, the "Invalid Credentials" errors should be resolved. If the issue persists after verifying both the Private Key and Sender ID are correct, please contact support for further assistance.