Live TV Option not Available in Android Apps

Hello, all. I am running Plex MS on an Nvidia Shield. I recently added a HDHomerun Extend Tuner. I am able to watch TV in the house using both Plex and the HDHomerun app. From work, however, the Plex app on my Android phone and my Android tablet does not have the “Live TV” option. I even tried running Plex on my Windows 10 laptop, to no avail. Is there an option that I need to enable in Plex’s settings?

Which version of server on shield and which version of app on devices?

On Android mobile it does not say “live tv” there is a Recording Schedule and Program guide ( the Windows store app if that what you are referring to, does not support Live TV )

Server Version 1.10.1.4602. Android app version 6.11.3.3147. OK, I see the program guide. It looks like a go, now. I was expecting to see “Live TV”, just like when I’m home and watching live TV through the Shield app. Thank you.