I recently purchased my first scale from the site and it has been a nightmare. After researching the boards, I discovered I was not the first to suffer from this issue and finally contacted technical support. After 3 or so emails back and forth, their spokesman, Jacky told me it sounded as though the heli receiver was bad and I needed to return the heli for them to confirm. No return information was ever provided. After several weeks of my emails going unanswered, they finally contacted me once I involved PayPay. The company claimed they had lost contact and just recently found all my missing emails.