Hi, @Refold. None of the changes you are making using Netlify DNS are going to make any difference because the domain is not using Netlify DNS in any way:
refold.la. 21600 IN NS jule.ns.cloudflare.com.
refold.la. 21600 IN NS kevin.ns.cloudflare.com.
If you want to use Netlify DNS, you will need to stop using Cloudflare for DNS. However, as the apex domain refold.la is successfully using Cloudflare, you probably do not want to use Netlify DNS.
Instead, you probably should either:
A) create the DNS records in Cloudflare following these instructions: Configure external DNS for a custom domain | Netlify Docs
or:
B) Configure Cloudflare to proxy that domain to Netlify
Which to do (A or B above) is up to you. Please note, with either solution above this inactive DNS zone must be deleted:
https://app.netlify.com/account/dns/refold.la
The only reason to keep that DNS zone around is if you do plan to move the domain to using Netlify DNS. As it is not using it now, that is an “inactive DNS zone”. Inactive DNS zone are neither recommended nor supported. We strongly recommend deleting inactive DNS zones as they often cause issues as covered here:
If there are other questions about this, please let us know.