Hi,
The network page on the monitor page is actually for input. So it is normal that you don't see your Art-Net output there. The output page is the output for DMX, Art-Net and sACN, as they will always be the same.
I'm afraid you might be running into an issue where the Art-Net port is claimed by either CueluxPro or WYSIWYG. They probably can't both claim the same port, so maybe it can't be done on the same machine.
But I see you have the CueCore master setting set to 'no'. You will have to master the CueCore in order to transmit any kind of DMX, Art-Net or sACN.
What you can try is sending Art-Net from the CueCore to WYSIWYG. Master the CueCore from CueluxPro, but first start WYSIWYG before you start CueluxPro. This way WYSIWYG can claim the port. Then set the Art-Net output on the CueCore.
You can also try to broadcast using 255.255.255.255, just to be sure.
Greetings,
Bootsy