I'm attempting to add my LG UH6550 Smart TV with webOS 3.0 to my Logitech Harmony Smart Hub, as a true "smart device." I've attempted to scan my network, with all devices on the same wi-fi network, and it never appears in the listing. I'm curious if Logitech supports webOS 3.0 (or LG Smart TVs) and, if so, is there something special I need to do with the TV or network configuration to get it to be visible?

Here are the steps I'm working from:

I can add the UH6550 easily as a traditional TV, but I'm trying to add it as a Smart TV so that I can auto-open the Netflix and YouTube apps with a Harmony Activity (and then, control it with Alexa/voice).