Additional Cameras Not Registering

I have a Ring Doorbell as well as TWO indoor cameras. When I log in to my Ring dashboard, it says "Active Cameras: 1", right above the pictures from three different cameras. I get that the doorbell might not count, but I don't get why the other 2 cameras don't register. If I go to "Devices", I see both cameras listed under "Security Cameras". I can't tell anything different between the two other than the first one I installed shows up and the second one I installed doesn't. Furthermore, and really the main problem I'm trying to figure out, when changing MODE settings, there's an option for what the cameras do in each mode, but only one of my indoor cameras is listed to change the settings on. The second camera just isn't there. Is there some sort of limitation with the alarm that it can only handle a single camera in mode settings? Thank you!