Photon - Lan?

Help me, please.
I have downloaded the photon server sdk and got it launched with loadBalancing.
Its configured to my local IP.
I have made a client to it with unity and it connects just fine to the photon server.
But for some reason when I place my client in an other computer over my local network it wont connect.
The client which is placed on the main computer with the photon server is at the same build as the one on the other computer.

What did I do wrong?

You did not update the GameServer configurations.
By default they are set to 127.0.0.1
If set like that, only the same computer can access it.

You need to set the IP to the external IP that contains the address at which it is reachable for the target audience (the LAN IP for in-lan connection or the external IP for external access)
you also need to update the client to use your machines network address as 127.0.0.1 will no longer work.

This is covered in the documentation though hidden a bit