I have a working domain “something.com”. Everything is working ok.
Now I have bought my country specific domain “something.com.ar”, and have pointed the DNS nameservers to Cloudflare.
How do I configure things in order to make both domains work. They should point to same hosting.
I have tried with a page rule, but without success.
You’re trying to add one domain’s DNS record to the other. That screenshot shows you’re in the DNS page for miropaesturopa.com. You need to +Add Site at dash.cloudflare.com for the miropaesturopa.com.ar domain.