You have entered a product key for a different plan than the one you are subscribed to. Redeem this key to switch from one ...

You have entered a product key for a different plan than the one you are subscribed to. Redeem this key to switch from one plan to the other. When you switch, you will lose the remaining time on your existing subscription. To use the most of your prepaid time, wait until the end date of your existing subscription before redeeming this key.