Changes to Samsung TV supported devices
Starting on December 7, 2018, HBO GO will no longer be available on Samsung TVs released in 2012. To find out if HBO GO is available on your Samsung TV, go to Samsung TV: Compatible Devices with HBO GO and look for your Samsung TV model.
If HBO GO is not available on your Samsung TV, you can use a streaming player (such as Roku or Apple TV), a game console, or stream HBO GO to your TV using Chromecast.
For a list of supported devices, see Which devices is HBO GO available on?