How do I reconfigure web push notifications if I've lost access to my Firebase project, and what happens to my existing subscribers?

Web push in Pushwoosh is configured with a VAPID key pair, not with a Firebase credentials file. If you have lost access to the Firebase project, what actually matters is whether you can still retrieve the VAPID keys it held.

First: can you still recover the keys?

If anyone still has access to the Firebase console, open Project Settings > Cloud Messaging > Web Configuration, copy the key pair, and use the three-dot menu under Actions to Show private key. With both halves in hand you can keep your entire subscriber base:

1. Go to Settings > Platform Configuration > Web Push Notifications and click Configure (or Reconfigure) under All browsers configuration.
2. Select Use existing configuration.
3. Paste the VAPID public key into Web Push Certificate and the private key into Web Push Private Key.
4. Click Configure. Existing tokens stay valid and nobody has to resubscribe.

If the keys are unrecoverable

Then you must start a new configuration, and the existing tokens are lost — they are bound to the old key pair.

1. Open the same screen and choose Create a new push configuration.
2. Pushwoosh generates a fresh VAPID key pair and wires it into the SDK configuration automatically. You do not need Firebase at all for web push.

What happens to your subscribers

• Visitors who already granted the browser notification permission are resubscribed silently the next time they load a page with the Web SDK — no second permission prompt. Setting autoSubscribe: true in your init parameters makes this happen without any user action.
• Expect a spike of InvalidCredentials errors on the first sends after the switch: those are attempts against the old, now-invalid tokens. Pushwoosh removes those tokens automatically and the error count falls as visitors return.
• Users who never come back are not recoverable.

Caution: replacing VAPID keys affects your whole web push setup. Only do it when you genuinely cannot recover the existing pair.