If you are the original purchaser of the Product (Shepherd Lock) from shepherdlock.com and have changed your mind or purchased the lock without noting its compatibility or usage details, you may return the Product within thirty (30) days of its purchase date in its original condition for a refund, minus shipping costs, and with a restocking fee of $25. If there is a functionality error, you can return your lock for a refund, minus shipping costs, after Shepherd Lock's tech support team troubleshoots with you. Plan to allow fourteen (14) days for processing your returned unit and issuing a refund. Contact support@shepherdlock.com