Programming your safe is often the most challenging part of the BlumSafe experienece, UNLESS you folllow the instructions carefully. See the instruction manual for your BlumSafe or the videos for programming the keypad and fingerprint sensor, AND FOLLOW THEM VERY CAREFULLY. For example, when you program your PIN into the keypad, you must do so TWICE for it to take. Also, due to supply chain vagueries, sometimes the fingerprint light will be green instead of red, or the red programming button will be on a slightly different part of the back of the lock than shown in the video.