Can't synchronize to active directory server

hello im from public institutions in my county im try use seafile comunity nad cant add user from my active directory server, im looking for a private hosted cloud server wich can colaboarate with my AD server

i use this code

HOST = ldap://
BASE = cn=users,dc=domain,dc=com
PASSWORD = xxxxxxxxxxxx

in login page i try with user but cant login

What log files saying?