Contact

Send a message for product questions, classical source / citation issues, privacy or security reports, or account access. We read every submission; response time depends on volume and whether the request needs engineering review.

Good topics to write about

• A card or report that seems to mis-cite a classical source
• Privacy, data deletion, or cookie/consent questions
• Security vulnerability reports (please include steps to reproduce)
• Account access or quota problems

What this form is not for

We cannot provide personal medical advice, emergency triage, or prescription guidance. For urgent health issues, contact local emergency services or a clinician.