which station to choose for WH2600

In fact in my broswer I open the IP address of the small black box (IP observer)
There I have a page which open as a ‘Weather logger’ where I can see the config , network , settings , life data … (see picture)
This box is directly connect to WU via their server.
All my data logs are archive on WU.
I run your testmulticast.exe but nothing happen no display no errors
It runs a few second (check with 'process explorer) , is there a log somewhere?