That first image is an “A” record, not a CNAME. A CNAME is supposed to point somewhere else, so your DNS here should have a CNAME line that says “pay” and then a target hostname.
To clarify, which image do you mean ? The first image link (http://cloud.ranala.com/c9e716) unfortunately isn’t displayed as an image for me, only the two following. Please click the link and you can see the CNAME record I created with Cloudflare.
This image has that hostname showing as “A” records, not CNAMEs. “A” records are not CNAMEs.
Since you didn’t post a picture of your Cloudflare DNS records, it could just be that you did add it as a CNAME, but set it to . Try setting it to instead.