I have it set back to the default according to their documentation:

AUTH_LDAP_SERVER_URI=ldap://ldap.example.org:389
AUTH_LDAP_BIND_DN=uid=admin,ou=users,dc=example,dc=org
AUTH_LDAP_BIND_PASSWORD=adminpassword
AUTH_LDAP_USER_SEARCH_BASE_DN=ou=users,dc=example,dc=org

But last night I tried changing

uid=admin

for

cn=admin

, I updated

ou=users

to

ou=person

according to my understanding of LLDAP... and obviously the port is 3890.