Just got a new modem and this app, it failed to work with: Error code is 0002-1002 when hooked to my LAN but when I disabled WiFi on my phone it loaded properly.
Much digging in my LAN security settings and logs discovered a hard coded DNS requirement for the Google DNS server 8.8.8.8 that was causing the error.
Temporarily opening my security system to allow that connection allowed the app to function, Re-enabling the LAN security results in the original failure and error code.