If your friend joined using your invite link before the new reward launched in your market, your referral keeps its original terms. You'll keep earning $3 for each of their first 12 transfers, up to $36 in total, until it completes or reaches the end of its 12 months. It won't move over to the new $50 reward.
If your friend signs up on or after the launch date, your referral uses the new reward. You get $50 once they've sent $200 or more within 30 days, and they get a fee-free first transfer, a special exchange rate, and $10.
There's nothing for you to do. We apply the right terms automatically, based on when your friend registered.
You can see which referrals are on which terms in the 'Invite friends' section of the app – older ones are labeled as legacy referrals.