Air gestures and S pen stopped working

[LAMMIE723]

Air gestures went away and I had to do a factory reset to get it back on. S pen still doesn't work for screen write or when I remove the pen to write on the screen when it's off.  All this happened after the marshmallow update. Please help...nothing out there compares to the note 5.

[bearone21]

did you put the pen in backwards??