What is the process for setting up a WD My Cloud NAS on my home network?

I have a Comcast Xfinity gateway. One of its data outputs is connected to a D-Link PowerLine. The PowerLine uses my home's electrical cabling to run the data to a second PowerLine unit in another room. The data output from the second PowerLine is connected to a Netgear 5-port Gigabit switch (I'll be connecting other devices). One of the data outputs from the Gigabit switch is connected to my NAS.

I have the WD application, plus admin access to the Gateway. I've searched extensively on line, and tried different processes, but I've been unable to connect to the NAS. It does not appear as a drive on my computer. Thanks in advance for your advice.

2017-08-16T14:24:49Z

Both PowerLine units are plugged directly in to AC wall outlets, and synched.

?2017-08-16T17:36:35Z

Try bypassing your Powerline devices by connecting the NAS directly to your router as a test. If it starts working properly, something's going on with the Powerline connection.