Unable to complete domain ownership verification because DNS is held in an inaccessible Netlify account

I am trying to release a custom domain from another Netlify account.

The verification process requires me to add a TXT record, but the domain’s DNS is already hosted in the inaccessible Netlify account I am trying to recover.

I therefore cannot add the verification record through either my registrar or my current Netlify account.

This creates a circular verification problem.

Could a Netlify staff member contact me privately so I can provide proof of domain ownership and the relevant account details securely?

I do not want to post the domain, account email, verification token, screenshots, or ownership evidence publicly.