Cloudflare with Prometheus

Hello,
Does anyone use or try Prometheus + Grafana with Cloudflare? I’ve followed this guide and it seems I can’t fetch any data.

[type or paste code here](https://blog.cloudflare.com/improving-your-monitoring-setup-by-integrating-cloudflares-analytics-data-into-prometheus-and-grafana/)

From Googling I found out that it might be because I’m using a Free account, and to fetch the stats you need to be subscribed.
Can anyone confirm it?

Thank you, I appreciate any help or information.