I deleted a project that had the subdomain faith-senpai.vercel.app . I tried to re-assign the subdomain to another project but it keeps telling me the domain is used by another project. Please release faith-senpai.vercel.app so I can use it again.
The domain troubleshooting guide can help with most custom domain configuration issues. You might be able to use that guide to solve it before a human is available to help you. Then you can come back here and share the answer for bonus points.
https://vercel.com/docs/projects/domains/troubleshooting
You can also use v0 to narrow down the possibilities.