I have added the domain solarfi.net to my accoun some weeks ago, and I checked the DNS at resigstrar which is correct, but the cloudflare still says “Waiting for nameserver update” even after I removed and re-added the domain.
Looks like you need to contact your domain registrar and ask them to remove DNSSEC on the domain:
$ whois solarfi.net Name Server: amy.ns.cloudflare.com Name Server: david.ns.cloudflare.com DNSSEC: signedDelegation
As that looks like it’s preventing propagation, https://www.whatsmydns.net/#NS/solarfi.net
Some other ideas here
pending nameserver update #CommunityTip ,