Site name: nonprofitmarketing.netlify.app
Custom domain: nonprofit.reidkille.com
Verification: Yes, I have added the TXT record with a link to this post to my domain on Squarespace.
Exact error: reidkille.com or one of its subdomains is already managed by Netlify DNS on another team.
This issue happened because I deleted and re-signed up for my Netlify account, but it appears the domain is still linked to my old account.
Thanks in advance and apologies for the inconvenience!