Need to change DNS setting but can’t because I was on siteground

Please Help I was on Siteground and I purchased cloudflare through them. However I am migrating away from them because I needed more resources and my website is stuck with a Error 1016 Origin DNS Error.
Please help!
Thanks

  • Create a new Cloudflare account > Add your domain > Update nameservers.
  • Update DNS via A record IP address