Hello @Puyesseung23 and welcome on the Swisscom Community 🙂
An error is currently occurring on the blue TV App on some Samsung TV sets. After a while, the app closes and the home screen of the TV set appears. Watching from the blue TV app works as usual via smartphone, tablet, Internet browser or on the TV-Box.
Our technicians are working on it, but the resolution delay is unknown.
Sorry for the inconvenience.
I wish you a nice day