KNotifications on Android 13
With Android 13 applications need to request permissions to show notifications in the same way you’d need to request permissions to access say the camera or the calendar. Here’s what you need to change as a KNotification user.
There’s a merge request for KNotification 6.0 making this fully transparent, which has meanwhile also been backported to KNotification 5.112. So with a sufficiently recent KNotification this step becomes unnecessary for applications.