Trying to redirect a subdomain to another website

Here’s Aleix.
My Netlify project is
I’m trying to redirect a subdomain that I have ( to this website: The subdomain is added into the domain atlas option.
I’ve being searching into Netlify community posts and I try to do the _redirects option (mine can be found here: _redirects). But the first line (what I want) isn’t working.
I’ve also tried the netlify.toml (here’s mine: netlify.toml). Again, it’s not working.
What I’m doing wrong? Thanks for your answer and patience!

@Tuplet I think you want:* 200

to be:* 301!

Per the documents on domain-level redirects:

This works. ^^