Issue with recognizing WD hmoe server with TV

my phillips tv doesn´t recognize the WD home server within the lan.

it did works once at the beginning when it set up the system.

but after a while are´nt any more.

any ideas what i did wrong??

Cheers for your support

Have you tried powercycling the My Book Live and the router? Do you have any problems accessing the My Book from another PC or device on your network?