Ring Contact Sensor won't connect 1st gen

Hello, I have been unable to reconnect a contact sensor. It sent out a tamper alert in the middle of the night for no reason as it was not tampered with. I disconnected it and then reconnected it a few days later. It lasted about a week and the tamper alert went out with no tampering taking place. I disconnected the sensor again and have been unable to reconnect it. I have followed all tutorials and guides for reconnecting a sensor and nothing has worked. I have replaced the battery and still nothing. I have a range extender about 5 feet from this failed sensor. Is it possible the sensor is defective?