The issue has been resolved by the Cloudflare team, and they have confirmed that all services are now operating normally across the region.

Status: Recovering

Cloudflare has confirmed that a fix has been implemented and services are now back to normal. They are continuing to monitor for any residual errors.
All affected services should now be operational.

Ref: https://www.cloudflarestatus.com/

There is a global intermittent outage with Cloudflare, our DNS provider, which is causing service unavailability. Currently, our services are unavailable in EU regions, and according to Cloudflare's latest status update, the issue may spread to other regions as well.