NIS problem

My 360 Norton Premier is not working properly. The NIS has suddenly disappeared in Chrome browser even when I was on Windows 7. Now am on Windows 10. Also same. The setting show Chrome browser as working properly. Still no NIS. Another issue is EDGE browser on Windows 10 does not display the Norton toolbar nor the NIS. Understand EDGE does not allow extension but then how am I protected by Norton then?

Need a solution ASAP or please refund my subscription.