this message appears, even after spending 96 hours / 4 days:
Unfortunately, you can't join Xbox LIVE Rewards right now. It's strictly because You need an Xbox LIVE account to join Xbox LIVE Rewards. Just follow these simple steps:
Step 1: Connect to your Xbox 360
Step 2: Join Xbox LIVE*
Step 3: Come back and sign up for Xbox LIVE Rewards
If you have already taken the steps listed, please try again soon.
*After you create an Xbox LIVE account, it can take up to 96 hours for you to be able to join Xbox LIVE Rewards. If it has been over 96 hours and you still see this message, please contact Xbox LIVE Rewards support using one of the methods here.
when can enter the xbox live rewards?