How am I supposed to reach out to Cloudflare support?
If I start at cloudflare.com, and click "Support", "Contact Support", that takes me to the Cloudflare Dashboard. In the upper corner, there is "Help Center" and "Cloudflare Community". In the bottom, "Contact support". "Contact support" and "Help Center" both lead to the same page: https://support.cloudflare.com/hc/en-us ; that page has a giant "Submit a request" button on it. Clicking that takes me … back to the dashboard. I suppose there is the community, but the UI seems to imply there is a "file ticket" thing, but the UI seems broken.
Also, your RDAP implementation — is the API (not just the web UI) to it something people are free to use? Additionally, it's not quite RDAP; it doesn't conform to the RDAP RFC (RFC 9083) in the eventAction string used for expiration dates. (It calls the eventAction "Expiration Date"; the RFC calls it "expiration". Parsers are picky.)
For me, it ended up on this URL:
https://dash.cloudflare.com/<myzoneid>/support
Basically, append /support to your dashboard URL.