Can I get a refund? Follow You may refund your pre-order any time up until shipping begins. To request a refund, please email us at email@example.com. Related articles How can I reduce air pollution inside? How Accurate is Flow? How do I update my Flow's firmware? How do I perform a factory reset? What are the Plume AQI pollution thresholds? Comments 0 comments Please sign in to leave a comment.