Stalker Client 2.8.3 server error

Greetings to All,

I’m looking for guidance on an issue I’m having with the above client running on an Amazon FireTv stick (gen 2).
I have a 1 month subscription to iks66.tv and have not been able to use to the service. I receive the following error in the Kodi log file when I
attempt to connect\load channels…

(an error indicating that PVR software load failed due to server error)
PVR–GetChannels cannot get channels from client 2125959″
“PVR-Getchannels – addon – stalker Middleware:’ returned an error: server error”
In the client config, timeout is set to 120, mac & server address user & pw are pre-verified

I have contacted the vendor and have received sparse info to resolve my issue.
They redirect me to old posts and old info that do not pertain to KODI 17.

I was wondering if anyone in this forum has similar experiences with this vendor and what they did to resolve it
Is anyone using the 2.83. client with success? Is there a way to re-install stalker client 2.8.3 without re-installing Kodi?
.
I believe my KODI setup is working correctly since I am able to view video content\channels in Oblivion TV using the Sanctuary add-on.

Thank you for your kind attention to my plight!

E.Z. Rider