http://na.finalfantasyxiv.com/lodest...riend_recruit/

Apparently Rinari is right. Your cousin needs to pay for his first sub to get the rewards. Although he set the sub up, did he get billed already? Because if not, he might nees to wait till the 30 free days expire (no idea if you can force this with time cards). If he got billed already, I'd contact the customer support.