Why doesnt the preview message stay off?

[AC Question]

I dont want my messages showing on top such as who texting me. I click on preview message to check it off n it stays on wont uncheck

 

[Tim1954]

If this occurs in the lock screen, you can kill it from lock screen settings.
Try opening applications, find messaging, force stop the app, clear its cache, and try again...
If you need guidance with any such operations, please join the forums and we'll talk you through it all... Happy days