Wd my cloud only works on my home network for my Note 4

I have a Samsung Galaxy Note 4 and it keeps gigving me connection error (406) when i try to connect away fom home. Works fine on my wifes iphone and we use the same carrier (Sprint). when i set up the app i used activation codes and everything looks fine except for my Note 4 it says unregistere device even though i used an activation code. here is a pic, any suggestions?

Hi dan26301701, I recommend you to contact tech support directly for your case. 

http://support.wdc.com/country/index.asp