If you have a Mobile Samsung device running Android 11, 12, or 13, Samsung has disabled the ability to use Smart View to connect with non-Samsung devices.
On Samsung devices running Android 14 with One UI 6.1 and higher, they are introducing the ability to share to other devices in an experimental phase, which has not been tested in combination with ClickShare.
As an alternative, you can use the ClickShare Mobile App to share to your ClickShare device.