When I use spotify connect in other devices, I was able to select the device from the available devices menu, and then the device was opened with the spotify app. But with my Samsung TV, I can only select the TV if is turned on and the Spotify app is open. Is there any way to fix it? Or it's just how Spotify Connect works on Tizen?
Certain devices need to be active if you want them to show in the Spotify Connect picker. Perhaps try switching off the Show local devices only setting. This means your app will try to find nearby devices that aren't on the same internet connection as you. Here's how:
Tap Home. Got Premium? Tap Your Library.
Switch off Show local devices only and try Connect again.
Be sure to be logged in with the same Spotify account on your TV.
Hope it works! Let us know if you have further questions.