There can be several reasons why you’re having this issue, depending on the type of program you’re trying to watch:
Helix on-demand content
Some on-demand content may be unavailable outside your home. Due to provider restrictions, some Helix on-demand content can only be accessed through your home Wi-Fi network.
Recording on a cloud DVR
You can watch online any recording that’s on your personal cloud DVR once the recording is complete. However, you can’t watch it through the app if it hasn’t finished recording.
Even if you’re not connected to your home Wi-Fi network, you can access TV Go channels through the app’s menu: TVE > Live TV > TV GO Channels.
Note: Watching channels on your smartphone or tablet when not connected to your home network uses up mobile data, so be careful not to go over your limit!