I have followed this instructions to set up the CNAME with my 1 & 1 domain host. But unfortunately it’s still not updating!

Also I found that the CNAME is now separated from the A/AAAA Records setup!

So, should I avoid the instruction mentioned above and go with the new setup? If so, I am also a little bit confused what value goes where on the new CNAME setup. (see attached screenshot)

Can anyone please help me out here as this is very urgent to go live with my page. I want my root domain to have the landing page.

Thanks