I have transferred my domain from 1and1 to Cloudflare (few months ago) and now my site (codeduplex.com) is not working. I raised the ticket on my hosting provider site, they said that " Dear Client, Cloudflare IP address is blocked for security purposes in the server. Please update the below-mentioned nameservers for all the domains after that it will take 2-6 hours to reflect globally, please check after that. Nameserver 1: ns31.hostingraja.in Nameserver 2: ns32.hostingraja.in Regards,"
The issue is, i am not sure how to do that on cloudflare. I am on basic plan of cloudflare.