Up Faith and Family on the Roku channel not on all devices

It's not unusual for something available as a subscription through The Roku Channel to also have a stand-alone channel and a subscription to one won't work on the other.  Confusing, I know.

Check the software version on the TV and the Express displayed under Settings->System->About as well as the version of The Roku Channel on each device - highlight The Roku Channel on the Home Screen and press the * button on the remote and the version of the channel should be displayed.  Maybe the TV hasn't updated to the latest version.  It should check for updates automatically, but you can manually check from Settings->System->System update.