The Measurable Data Token (MDT) accumulated in your RewardMe Account does not have an expiration date and may remain in an active RewardMe Account indefinitely, provided that your RewardMe Account remains active and the Program has not been terminated pursuant to these terms and the Rewards Point Program Policy.
For more details regarding the expiration of MDT, please refer to the Terms of Service Chapter 5.7 https://reward.me/terms-of-use