Just upgraded from Isengard to Jarvis - channels/epg won't load

Im with IKS66 on a MInix Neo X8H-Plus…..just upgraded from Kodi 15.2 to Jarvis 16.1 with the following steps:

Renamed Kodi folder in android data > uninstalled Isengard > installed Jarvis > changed kodi folder in android data back to its original name.

Started up Jarvis and got a message saying 'Authentication Failed…Retrying"….cleared all caches etc, reset iptv but same result.

Went into my add ons and I am seeing the Stalker Client 1.0.8 (by Jamal Eday) enabled. All my settings are reflected inside.

Is this the correct add-on or must I use Stalker Client NFPS 0.8.4?

Also, under server address, I have got hxxp://66.iptv66.tv - is this correct still or has it changed?

Any help appreciated. Many thanks to this great community.

Sorted it out…..wasnt exactly easy to find out that the server address has changed…it is now hxxp://s1.iptv66.tv/c/

took a long time combing through posts to find out. really should be a sticky or something.