Need Assisstance with Getting 4th level domain added to cloudflare

Website, Application, Performance Registrar Feature Request
1

Enter the TLD

.us

2

The domain you add to Cloudflare needs to be a subdomain of one listed in the Public Suffix List, so the third-level needs to be listed here…
https://publicsuffix.org/list/

3

The domain we are trying to get added to cloudflare is ci.st-croix.wi.us

When we attempt to add this domain in cloudflare, cloudflare will allow St-croix.wi.us but not ci.st-croix.wi.us

St-croix.wi.us is not listed in the publicsuffix list.