I have a virgin Media Hub 3, (Not in Modem Mode)

Westen Digital My Cloud

TP link Archer c6 router,

My Hub 3 Is in the living Room, while my TP link is in the Garage with my WD my cloud.

i connected the lan cable from hub 3 to the TP(blue Connector) 

i am not in modem mode as the TP router will not transmit that far to the living room

and the HUB 3 not reach to the garage

so i have 2 wifi signals one from VM HUB3 and other from TP Router

eg, Virgin Hub 3 wifi name VM.  password 0000000

     TP Link        wifi name TP-garage.  Password 00000000

i can use the internet without any problems, and can see WD My cloud on network, while on the TP network, 

but when i goto the living room i log on to VM Hub 3 and then i can not see my WD my cloud.

I have also tried in AP mode without success