WAN disconnects since I installed WD My Cloud on the network

Since I installed WD My Cloud 2Tb on the network, I find my WAN from my router Tp Link WR841N, each morning disconnected. I didn’t have this problem before having the WD installed.

Does anybody know what is the cause and how should I solve this issue?

My details of my network are on the link below:

http://community.wd.com/t5/WD-My-Cloud/More-Info-Needed-The-WD-My-Cloud-is-Disconnecting-from-the/m-p/680129#M7543

Hello, have you tried setting a static IP for the My Cloud? Check page 80 of the manual for more information.

Manual

http://www.wdc.com/wdproducts/library/UM/ENG/4779-705103.pdf#page=85