[Kodi 17.0RC2] Fails Server Authentication

I am a total newbie to Kodi, so please bare with me.

Properly installed a couple days ago.
Then I tried the built-in stalker client. I was very careful to get the info correct.
Then I found out that there seems to be a controversy over how ti input the server URL.
Probably not a subject for this form.
Does this stalker portal actually work? Or am I a beta tester here? Does anyone else have this stalker client actually working?

Your help and advice is well taken and greatly appreciated.