ITS WORKING! I finally got it working. 
Glad to hear it!

Your last suggestion I think was the clue.
I thought it might...
While testing a new facility yesterday I accidentally recreated the same sort of feedback text that you were reporting, so that gave me the clue!
I then started WD and changed the port setting in the TCP/IP setting from 80 to 5500 then all of a sudden readings started popping up.
An odd choice, because port 5500 is normally a serial-to-ethernet-bridge reflection of the actual feed from your weather station (strictly speaking, weather station 0, since with Meteohub v4 and above you may have more than one connected).
The logging prototcol talks to Meteohub's web server with is usually on Meteohub's port 80 or port 7777.
Most likely the difference is somehow down to the way a router is configured at some point?
If it works that's the main thing!
These forums are great!
Indeed!
