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 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?
- What do I get if someone uses my referral code?
- Is the money I earn via my referral code transferable?
- Where can I find my referral code?
- Do my rewards stack up?
- How can I see how much is available to me?