There are three ways to set the sleep timer:
1. If you have clicked on a station from the list and the detailed view opens, you will find a circle with three dots to the right of the play-pause symbol. Behind this is the sleep timer function, among other things.
2. You can also set the sleep timer via the app settings, which you can access via the user icon at the top left of each main screen. In the app settings, you can find the alarm clock and sleep timer at the top, just below the welcome.
3. By tapping on the player at the bottom of the screen, you can open the player in full-screen view. There you will also find the circle with three dots to the right of the play-pause button, which you can use to set the sleep timer.