Glad to see another convert 
You are welcome to post on the EcoWitt driver topic, it makes it easier to keep things together and for others to learn from issues others may encounter, plus I get notified you are experiencing an issue. That or you could tag me in your post (adding the "at" symbol in front of my username).
Right... In terms of your issue, I'm guess you are needing to setup the custom data feed to HE. Is that likely the part you are struggling with? Step 2? I might add a few more notes to the GH page to provide some hints on where to go. Hopefully things aren't too different in the newer EcoWitt App (I'm still using WS View).
EDIT - I have updated the notes on the GH Readme page. Hopefully this was the issue and these make it clearer on how to set this up.
