DS920+ accessible but won't show up in router network list?

I can connect to the NAS just fine through my browser using the local 192.... address. It also shows up in my Windows Explorer network share. But for some reason it doesn't show up in my network list/connected devices on my ASUS **RT-AX82U** router. I'm trying to setup WOL but can't because of this. Anyone know a solution?

EDIT: I will add that I am using a VPN on the NAS, which I disabled for testing purposes and the NAS still did not show in my device list on the router.

UPDATE1: I can at least WOL by using the MAC address. Not ideal as I have to write the MAC down and paste it in every time. If I had the device listed, I could save it's profile and WOL from that.

UPDATE2: still not working but I found a way to save a profile for an unlisted device so I at least avoided the headache for WOLing my device so I'm relieved. still interested if anyone has a solution as I think this issue can be important for future troubleshooting.