Upgrade to kodi 16.1 authentication failed

Just installed 16.1 and configured stalker client but continue to get authentication failed not sure on address
Http://portal5.iptvprivateserver.tv/stalker_portal/c/index.html....have been seeing where same addresses changed on a new format, just wondering if this did as well...android box magically 1800... was working good on stalker before upgrading to 16.1 some buffering so thought I would upgrade

Address I'm using is http://portal5.iptvprivateserver.tv/stalker_portal/c/index.html and on my android magical 1800
 
That address should still work, since NFPS hasn't undergone changes yet. You can still use the instructions below for NFPS. Try an IPTV Reset after everything is configured correctly and Kodi is shutdown.

http://iptvtalk.net/showthread.php?24831-PVR-Stalker-(Kodi-Built-in)-Set-up-tutorial

followed instructions and getting no where but i went through them a few more times and then changed my mac address closed out as it said and reset mac address and left it off for about 1 hour on home screen then went into live tv disabled and then enable and we are up....thanks for the help was driving me crazy....