Hi, @espinielli. You have two teams. One is using the same email address as being used for this support forum and a second team is using a different email address where the site aiu-portal is found.
If you log into the account using the same email address as the forum account, you can delete the DNS zone here:
https://app.netlify.com/account/dns/ansperformance.eu
However, if you don’t have access to that email address anymore, you can also use this process below to verify DNS control and we can delete the DNS zone for you:
Please let us know if there are any questions or if you create the DNS verification record.