Hello,
I'm trying to set up my Cloudflare DNS servers for my domain. I reseted my domain DNS to OVH standard and tried to change the nameservers to those cloudflare gave me. After some time I always get an email saying:
"DomainDnsUpdate Failed
rollbackOvhDomainUpdate
Cancelling DNS update"
what I do is changing the DNS Server to:
decker.ns.cloudflare.com
kristina.ns.cloudflare.com
Can someone help me out here?
It seems I'm experiencing a similar problems. I've configured nameservers according to Cloudflare prompt. Waited several days and the NS records are not present at all 
We're you able to resolve the issue?