Can not connect plex server

My Cloud Home My Cloud Home Single Bay
1

Hello I can not connect my plex server to my cloud home divicer. Can not find server
And I think I have no conenction betvin my router and my cloud home site

3

have you installed plex on the my cloud home? it is an available app in WD discovery.

4

Yes plex is instal and The messiige onsdag the screen is