Cold boot a Samsung TV when one streaming app freezes
Restart the television fully before reinstalling the app. Keep Smart Hub reset for a problem that survives app and firmware checks.
IPTVBlogs editorial desk · 
Perform a full restart
Open one other app on the television first so you know whether the problem is limited to a single publisher. Samsung’s cold-boot guidance uses a long press of the remote’s Power button until the TV turns off and starts again. If you cannot do that with your remote, follow Samsung’s unplug-and-reconnect procedure. After the TV comes back, open the affected app and repeat the same action that froze it.
Keep sign-in and app removal separate
If the fault persists, check for a TV software update and record the app’s behaviour. Samsung suggests deleting and reinstalling an affected app before resetting Smart Hub. Confirm you can sign in and that the listing is still available first. A Smart Hub reset affects other apps and their account connections, so prepare for that wider change if Samsung support advises it.