We have been using JIRA OnDemand for a while and added Confluence OnDemand. Users are not able to access Confluence spaces.
When I go to Confluence Admin > Users it takes me to the JIRA User Management page. Users are all shown as in the Remote Crowd Directory. When users in the "users" group on that page try to access Confluence spaces with read and other permissions assigned to the "users" group, they get "Access Denied."
When I go to Confluence Admin > Security Configuration and edit, the "External user management" option is unchecked and disabled.