Hi Michael Dark,
Have you noticed that users have been added? How many users in your excel file?
I have found this issue '`Failed to load '/etc/gluu/conf//gluuImportPerson.properties' configuration file` during first attempt to import users.
During 2nd attempt, users were added. authentication also works.
Interesting find: `gluuImportPerson.properties` file is missing in `/etc/gluu/conf`.
Regards ~ Shakil