Site disappeared

I’ve added a new site few weeks ago, once I’ve changed the name servers to cloud flare it disappeared from my account and when I try to add the site again I’m getting an error.

The add site error is unrelated to the site being removed from your account. WRT it disappearing, check your audit log for clues.

Also, seems like there is an issue with the nameservers, which may be affecting the lookup:
connie.ns.cloudfare.com
kurt.ns.cloudfare.com
and
lars.ns.cloudflare.com
nicole.ns.cloudflare.com