Model : AC1900

Hardware Version : VR900

Firmware Version : 0.1.0.0.9.1 v 0069.0 Build 160721 real 66177n

ISP : Sky Fibre

Hi everyone I wonder if someone could help.
I am using my VR900 V2 in AP mode with my Sky q router all of which works fine. The sky router is on 192.168.0.1 and the VR900 is on 192.168.0.2 DCHP turned off on the VR900 and wireless turned off on sky router, cables connected Lan to Lan, the sky is on a VDSL line. Problem is the sky box can see all devices connected but the VR900 can only see the one that viewing, if I logon to router via my phone it shows the phone and if I log on via PC it shows the PC, is this what you would expect in this set up. I cant see devices to block etc.
I am using the VR900 to do most things as it is a better router and just the sky box to connect to internet, I hope this make sense.
When I was with a different ISP and the VR900 was the main router I could see everything.
Any help would be appreciated.