Are you using the beta of 2.0 or are you using the 1.6 version from http://onecare.live.com? Note that since you cannot purchase a subscription from South Africa at this time, once the trial period expires, you will need to remove the product as it cannot be activated.
If your current status is showing at risk, open the OneCare program and it should tell you *why* you are at risk and what you need to do about it. I am assuming you are at risk because it has expired or is about to expire.
-steve