Switching to different devices already set up at new home

Hello. We just moved to a home that already has ring cameras in place. We had ring cameras at our old home but just took them down when it sold. How do I get these cameras linked to my email without having to take them down or climb? The boxes have been thrown away. It’s a family member so I have access to everything, I just need these in my account so I can pay the yearly fee to monitor. Thanks