Why isn't HBO Max working on my Samsung TV? If the HBO Max app is not working on your Samsung Smart TV, it could be due to any of the following reasons. Your Samsung TV is not compatible with the HBO Max app. You have an unstable Internet connection or are experiencing WiFi signal issues. You are using the outdated version of the HBO Max app. If your Samsung TV is not playing HBO Max videos, HBO Max may need to be updated. To do this, open Smart Hub on your Samsung TV and select 'Apps' > click 'Settings' icon > 'Updates' > 'HBO Max' > then select 'Update' to complete the process and resolve playback issues Of video.