I must be stupid but I’m trying to pair the multisensor 6 to the hub. I cannot get the sensor to light up by battery but it powers on with USB. The instructions say to put the hub in inclusion mode and press the action button on the back plate of the sensor. Call me crazy but it doesn’t appear to be a button. When you remove the back plate, there isn’t anything behind where they say the button is. Am I missing something? Is it worth my time trying to get it to work?