I just transfer my domain from 1and1.com to Cloudflare where I managed my DNS. Domain transfer to Cloudflare was successful. But now, nothing working. Everything looking as matter fat nothing change only domain transfer from 1and1.com
It wouldn’t surprise me if 1and1 changed your name servers during the transfer, and now they’re incorrect. You’ll have to contact Cloudflare Support: Login to Cloudflare and then contact Cloudflare Support by clicking on the Get More Help button.