Typically, this issue arises due to an incorrect user identifier passed in the digio.esign function. Kindly recheck the identifier(DID) with respect to the document you have generated.
Yes. When an email notification is sent about webhook failure, it contains HTTP Error code, Error message received and The Entity id (eg. Document id or Mandate id) for which the webhook attempt is continuously failing.
The document ID can be located in two places: In the response of the API call. In the dashboard, navigate to the "sent" section, click on the document you want to preview, and the document ID will be visible in the URL starting with "DID*"