I have looked at:
https://community.teamviewer.com/t5/Knowledge-Base/TeamViewer-on-Windows-servers/ta-p/4572
And my problem is that I have setup like in this above mentioned article, and I still can not get the MainID (ServerID) , the only one which i see is UserID.
And the information which Is popup after clicking in "exclamation point" icon is incorrect.
As it say that "this is ID for physical devices, and I can use them to connect to server as this is server ID" but the given ID 1xx xxx 882 is in fact "UserID" and not "ServerID"

What is wrong ?