Thank you for that information, @troy_owens. I was able to replicate the directly connected symptom and assign the TV to a room on UN60KU6300, a 60inch model of your TV. To be honest, I can’t remember between Add Device>Samsung>TV or if Scan for devices automatically detected it.
As mentioned, Sign out of Samsung Account on TV, then Delete Directly Connected Device from ST App and perform the Hard Reset.
The Resets mentioned above are as follows;
Soft Reset - Located under System>Start Setup (Resets the TV to it’s original settings for Setup process. (HDMI, Remote controls setups, etc).
Hard Reset - Located under Settings>Support>Self Diagnosis>Restore all TV settings to factory defaults.
Follow the setup process and sign into your Samsung Account, Return to the Smart Things Mobile App and attempt the scan or adding of the TV. (It should store network settings which is why I am thinking that I used the Scan opton but again unsure)
I hope that you are able to get it assigned to a room and that this information helps.
@stanleywinston, Do you have the older Television setup to WiFi or ethernet connection?