Be assured, in order to connect your S Pen in your device kindly go through below given steps:-
1. Insert the S Pen into the slot to start the connection. 2. Open the notification panel by sliding down from the top of the device. 3. Expand the options in the notification panel. 4. Slide the notification panel to the left. 5. Tap S Pen remote. 6. Tap it again to reactivate it.
If the issue still persist kindly visit your nearby service center for the physical inspection of your device. You can search for the nearby service center from given link:- https://www.samsung.com/in/support/service-center/
