Can't delete a file

I installed the free version of NTSF for mac. After it expired I deleted the app and a file folder in "Library" and I still get "Up date ' Push notices . Mac support told me to reinstall the program and then follow Paragon's instructions on "how to remove this program" but i tried to download it and it says my trial period has ended and now I have to purchase it - just to uninstall it !!!! Is there another way to get rid of the notification !

What's the exact file you already deleted in your Library folder? There may be other files you need to remove, too (check in /Library/LaunchAgents and /Library/LaunchDaemons, for example).