Hi ihstiv,
Thanks for posting. For LawnCheck to "see" your EtherRain controller, the device name that you enter in LawnCheck must match the name that is entered in your EtherRain controller.
In your case the name that you have entered in LawnCheck does not match the controller name. I don't want to state your controller name on the forum, so if you are unable to find the mismatch please send me an email and I'll mail it to you.
Hope this solves. By the way, your EtherRain feed is being received by LawnCheck. Just match up the names and you'll be good.
jim