Alias ​​for the second domain

[kurdak]

Welcome.
I have a problem with the other domain.
I have two domains, kurdak.eu on the domain server is configured. The second domain is, kurdak.pl, I want it to be a domain alias for kurdak.eu.
Domain: kurdak.eu is redirected to DNS: ns1.kurdak.eu, ns2.kurdak.eu.
Domain: kurdak.pl is redirected to DNS: ns1.kurdak.eu, ns2.kurdak.eu.
DNS settings:

I added a domain alias for assistive technologies etc.:

What can I do to make it work properly.
Please and information about what I'm doing wrong.
I also want to automatically run my subdomain.
Regards.