My Cloud Home - Device disconnected on Web, Mobile Apps, WD discovery

A few day ago, My Cloud Home is OFFLINE from all apps : WEB, Mobile app, WD discovery.
Plex server is accessible. I have already change router but no luck.

How can i Fix problem ?

Regards,

Hello,

Please refer to the following KBA: WD My Cloud Home Not Detected, Not Found, Cannot Connect or Device Offline