Hey Everyone and thank you all for the thread and the tips! I also created the account just to say thanks and share/highlight this solution:
Both my TV and Laptop were getting internet from the same Wi-Fi network
I disconnected them both from WiFi, leaving the wifi radio of both ON
I restarted the Laptop
Then clicked the PC's "New notifications" window (down right corner) and chose connect
and it worked. It seemed that Laptop the restart was crucial.
If that doesn't work you could try after the restart to click from the PC's "New notifications" window first
Just in case you can switch on the media streaming options from the windows menu as per https://www.wikihow.com/Connect-PC-to-LG-Smart-TV
Project and then choose duplicate or extend
and then the "Connect" or the "Connect to a wireless display"
Hope this helps and much luck to all of you! After all I'd prefer HDMI if possible as strangely the connection seemed a bit sluggish.
Cheers and good luck again