Cloudflare pages url shows unreachable after cname configuration

[hosting7]

For Workes & Pages, what is the name of the domain?

www.isoc.pe

What is the issue or error you’re encountering

Unreachable

What steps have you taken to resolve the issue?

Hello,
I recently created the CNAME www.isoc.pe and pointed it to isoc.pages.dev however when I access it from my browser
I receive a Cloudflare unreachable error message. So I was wondering what I did wrong as it is the same procedure I used before.

[sjr]

You need to add www.isoc.pe as a custom hostname to Pages and a DNS record will be created automatically. Don’t create the DNS record yourself.

Custom domains · Cloudflare Pages docs