Hi, I have choosen clouflare as my dns provider, I want to deploy my website on vercel. I added the A and CNAME records. My domain is sickrate.com , when I added the A record, sickrate.com was verified on vercel and now I can visit that but www.sickrate.com shows invalid configuration.

I have turned off cloudflare proxy and also have the SSL/TLS encryption mode set to Full (strict)

I already checked out the vercel cloudflare integration guide but it doesn't help in my case : https://vercel.com/docs/integrations/external-platforms/cloudflare
Can somebody please help me out with this issue.