I got the original request to renew my subscription when it popped up on my iMac screen. I tried to renew by using it and was unsuccessful, so went to the Norton home page and subscribed there.... leaving my credit card info, etc. My subscription was renewed but, I'm still getting the original notice each time I log on. I had hoped that by clicking the "don't want to renew" button it would eventually go away..... No such luck. I have no idea what is meant by a "subscription key." The notice is beginning to be a bit irritating. Any ideas would be greatly appreciated. Thanks....