See this post: Changed ISP - No Remote Access with AT&T BGW 320-500 - #3 by FordGuy61
Substitute your PC for the WD My Cloud.
You should connect the PC to the network via wired Ethernet if possible.
To set a static address on Windows 10: Settings → Network & Internet → Status. Then click on Properties.
Set the network profile as Private, then scroll down and edit the IP settings. Change Automatic to Manual and enter the IPv4 address, mask (24), gateway (192.168.1.254) and DNS servers (use public servers such as 1.1.1.1 (Cloudflare), 8.8.8.8 (Google), 9.9.9.9 (Cloud9)).
The method for Windows 11 should be similar.
If your PC has two network interfaces (i.e. wired & wireless), disable the one not in use.
Once you’ve configured a static IP address on the PC, proceed with the rest of the steps to configure the router and Plex Media Server.
