Google Nest Community

Hi, trying to connect to a nest doorbell that is at the home I moved into. I need to take it off the wall. I tried to put a small allen wrench in the bottom but it seems to be messed up. (Some plastic in the whole probably from someone trying to use ...

  I moved to a house with an outdoor camera already installed. I need to take the camera off the wall to get the 6 digit code so I can link it to my app. I can’t figure out how to get it off. It’s definitely not a magnet.