Don't find my Retropie in my Network

[Azarat]

Hi there,

I have built my Freeplay Zero (with a rapsberry pi zero w)
It works good so far but I cannot find it in my Network.
I have connect it with my WIFI but neither with WinSCP nor in the Explorer (Network) i find the retropie to fill it with my roms.
Can someone help me?

thanky in advance!

regards
Azarat