How do you setup Cloudflare tunnels to work with Obl.ong?

[AverseABFun]

So I got the tunnel and XAMPP setup on my local machine, and found it requires a Cloudflare zone. However, every time I try to add it as a zone, I get this:

Any ideas on how to fix this?

[reesericci]

You can’t. It’s blocked by our lack of listing on the Public Suffix List unfortunately.