Lyngdorf TDAI 1120 & Roon Android No Connection

Hello, i cant Connect my Lyngdorf TDAI 1120 with roon on Android Smartphone .

It IS searching but nothing happend, If i use the ip to check Connection also the same Problem:-(

Do you have a Room Core as the Lyngdorf is just a Roon endpoint.
I hope that makes sense to you. If not have a search for Roon documents that explain what is Roon.

There are also a load of YouTube videos by John Darko and Hans Beekhuyzen that explain what you need to do to get Roon up and running in easy steps