SECURITY VIOLATION: Invalid server signature.<br><br><strong>Troubleshooting Details:</strong><br>- Status: Signature is validly formatted, but mathematically fails to match the Payload + Public Key.<br>- Likely Cause: You are using a Public Key that does not belong to the Private Key on the server, OR the payload string was altered in transit.<br><br><strong>Data Dump:</strong><br>- Payload Length: 0 bytes<br>- Signature Length: 0 bytes<br>- Public Key Length: 799 bytes<br>