For security reasons, all CORS requests from browsers must be sent with Origin HTTP header. Safari 9 (or older) doesn’t support adding Origin headers on file downloads. Because of this limitation, document and receipt downloads don’t work in Safari 9 or older.
To resolve the issue, we recommend installing the latest version of the Safari browser — it is automatically installed with the latest macOS version. Alternatively, you may use another supported browser to download your documents and/or receipts.