[ASK] Access SSH 5N Denied with putty

Drobo - End of Sale Drobo 5N
1

i have 5n , and i try install dropbear then success so trouble come when i try connect ssh via putty … with syntax ex: ssh root@[IPDROBO5N]

access connect but request password then im insert root no approved …

please help me for can access root 5N via SSH

Thanks