Found the issue and a workaround. We were using the default UUID for the local username when bringing the users in from LDAP. We found that the iOS app could not translate between the username used to log into the app and the server’s local username (UUID). We found that the username used to log into the app had to match the local username on the server EXACTLY - case sensitive. Using the UUID on the app didn’t work either. Our solution was to change the “Internal Username” attribute on the LDAP Expert tab to userPrincipalName and then have the iOS users use UPN to login to the app (matching case with LDAP). Once the local username exactly matched the username used to log into the app, everything worked perfectly.
