Cloudflare can't use *.qzz.io second-level domains

[asdf8249]

Describe the bug, issue, or problem:
Cloudflare can't use *.qzz.io second-level domains.
When enter an existing domain: xxx.qzz.io, it says "Please ensure you are providing the root domain and not any subdomains (e.g., example.com, not subdomain.example.com)"
Previously xxx.dpdns.org was available.

URL (if applicable):
Do not upload sensitive private content (such as URLs containing account information).

Domain Name (if applicable):
Example: xxx.qzz.io

Expected Behavior:
I hope xxx.qzz.io works in Cloudflare!

Screenshots:
If applicable, add screenshots to help explain your problem.

Additional Context:
Add any other relevant information about the problem here.

[Jason091622]

I also have such problem. Considering this domain has been added to the Public Fuffix List, maybe we should communicate with Cloudflare? But how 😂