I have found that a user's credentials work no problem on an amlogic s805 (32bit)box. No authentication issues no problem. However, when using an amlogic s905 box (64 bit) same version of kodi, but 1.0.1 pvr version (DLL failure on 1.0.3 on s905 box) I cannot connect (authentication failure). I can't help but chalk it up to a bug with 64 bit boxes. If Psycon is reading this, I hope my info helps... I don't even know if you were intending to support 64bit boxes, but if you are, I hope my info helps. Before you ask, I have done all the basic stuff like resetting IPTV and changing Macs through iks66 route checker.