R2 Domain Connection not working

I have an r2 bucket which the domain connection does not work.

When I set the domain, it says initializing. When I reload hours later, it says "Unknown". When I go to the domain, https://launcher-files.modrinth.com/, it says CNAME Cross-user banned. This has not happened on any of my other existing buckets.

I've tried recreating the bucket, reconnecting the domain, retrying the connection, and more, all to no avail. what should I do?
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