@hyerani You should pre-empt their likely request for verification and add it.
Follow these instructions:
https://answers.netlify.com/t/support-guide-verifying-domain-ownership-for-netlify-custom-domain/13765
The value that you would use is:
https://answers.netlify.com/t/knockdog-net-or-one-of-its-subdomains-is-already-managed-by-netlify-dns-on-another-team/129583
Once done, let them know by posting here to say it’s ready to be checked.