Google Cloud Platform incident seems to be resolved. Everything should now back to normal.

Google Cloud is still down. We can't do much at this point, but wait for it to recover. We will update the status page after Google Cloud is back.

https://status.cloud.google.com/incidents/ow5i3PPK96RduMcb1SsW

Major Google Cloud Platform outage affects push notifications deliveries.

Notifications are not lost, but you might see significant delays in deliveries.