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This reaches the people who keep the record. Messages are private and go straight to a curator. No account needed, which matters most for the reasons below.

If something here reproduces your work beyond a quotation, says something untrue about you, carries personal information, or impersonates you, pick the matching topic. Those go to the front of the queue, we act on them rather than debate them, and you will hear what was done. What is and is not licensed may answer a copyright question before you write.

A mathematical error is different and faster to fix in the open: every entry has an edit button and a discussion thread, and a wrong claim can be reported from the entry itself.