I'm getting sound on my Android device, but no video with HBO GO
The HBO GO app requires a solid Internet connection while streaming video. HBO GO adjusts the video playback quality based on the strength of your network connection. If the network bandwidth is too low to stream video, you might get only audio. If the Internet connection drops altogether, video will stop playing and you'll be prompted to reconnect.
For information about how you can improve video playback, see Troubleshooting Video Playback on Android devices.