S Note closes unexpectedly

[MuriloBrog]

Hi Guys, good afternoon
There has been a couple of days that the S Note application closes my current document without a reasonable reason.
The S Pen can be close of far from the screen, I can be whether writing or letting it be, I couldn't see a pattern yet.
This application isn't available for re-installation at the Galaxy Apps page, so I couldn't figure a way to reinstall it.

Did any of you face this issue too?
Is there any possible fix?

thank you in advance!

 

[jgraves1107]

I noticed it is very large myself. Seems to be far from what my note 3 does. Look on the Samsung website for the app.