Issue
When a checkbox secure field is marked as required in the UI, the checkbox is still showing as optional.
Resolution
Drawloop does not support required checkboxes in the DocuSign UI.
As a workaround, either uses a required Radio button or required Signer Initials on the secure fields section.
One other option is to use DocuSign templates: https://support.docusign.com/en/articles/How-do-I-use-muiltiple-checkboxes-with-at-least-one-required