Grafana OnCall Mobile Push Notifications

I’m using OnCall OSS in production and want to enable Mobile Push Notifications, I see that the only way to enable this is by connecting to Cloud. Can someone guide me in figuring out if this requires a Grafana Cloud Pro subscription or anything else? I’ve spoken to the Grafana sales team and they mentioned that Cloud pro is unnecessary, but the docs say otherwise.

Docs and References:

  1. Grafana OnCall mobile app | Grafana OnCall documentation