When attempting to access this page as a user with membership of the site-admins group on a site where this group is mapped to Jira Product Administration, I get a 401, not authorized when calling the /configure route.
The message in logs shows:
Authorization failed
GET /configure?key=configure--configure-page&...&jwt=eyJ0eXAiOiJKV1QiLC...5llWqDHdg0 401 28.573 ms - 49
Which atlassian-connect-expression version you’re using?
Based on the error (see authorization.js) it seems that project permissions are being checked and fail due to missing project/issue context (you are accessing non-issue endpoint, right?)