Can anyone walk me through how to resolve this? Ever since the addition of the username/password Donation Code I've been getting Authentication Failed / Unable to Load Channels. I've changed my mac and reset it to no avail, I've read other threads but nothing has worked. Any help would be appreciated

Box: Nvidia Shield Android Set Top Box
Kodi - v15.2
PVR Stalker Client (Kodi built in) - v0.8.4
Active Portal - 1
Connection Timeout - 15
Mac - 00:1A:78:##:##:##
Server Address - http://11.iptvrocket.tv
Time Zone - Europe/Kiev
Login/Password - Donation Code
Remote URL - Empty
Token - Empty
Serial Number - 15 Random Digits
Device ID - 12 Random Digits
Signature - Empty