The money you earn via your referral code does not expire. It will always be available for you for any future purchase. You can find out more about your rewards by logging into your account and viewing your balance. Find out how here.
Related Questions
- How can I see how much is available to me?
- What do I get if someone uses my referral code?
- Where can I find my referral code?
- How do I know when my referral code is used?
- Do referral codes work on any kind of order?
- Can I get a specific/unique referral code?
- Do my rewards stack up?
- Is the money I earn via my referral code transferable?