I deleted the old project and now I can't add a custom domain to the new project

Hello Netlify team,

I’m having trouble with the domain api.hrvclan.dpdns.org. I’m currently unable to connect this domain to my hrv api project (hrvclan-api.netlify.app) due to the error: “hrvclan.dpdns.org or one of its subdomains is already managed by another team”.

I am the current owner of this domain and have full DNS management control on Cloudflare. It appears this domain still has its configuration saved from a previous project in Netlify’s system.

Please help me unlink this domain from the old account or guide me through the authentication steps (e.g., adding a TXT record) so I can prove ownership and connect it to my new project.

Domain needing support: api.hrvclan.dpdns.org
Thank you Netlify team!