New move

I just moved into a new home with a ring system with all of the bells and whistles (two key pads, numerous contact sensors, range extender, bridge with outdoor lights, doorbell, motion sensors, and security camera). The owners logged out of their account upon sale of the house. Now I can’t get anything to connect to the base station except the bridge. Everything else tells me some variation of it can’t connect to the network, pull some tag on the back of the sensor, or plug it in even though there is no tag and the keypads/extenders are plugged in. Help?