Indoor Camera 2nd gen cannot be added to older iOS app

Bought another indoor cam but cannot add it to my trusty iPad that does all things Smart in our house ... up until now. It says we need a newer version of the app to see this new camera but it is not available on older iOS devices. As a result the new camera keeps making the awful jingly sound every minute or two when the camera detects motion. I don't want to switch off all notifications as this iPad also controls our Ring alarm and is used to keep an eye out for when our dog is moving about the back of the house. I have tried everything I can think of but no success, any ideas from anyone please...