Adding new device to Plan

Hello,I bought a Ring Protect Basic in March this year when i bought my first Ring Camera. I am going to be gifting that camera and using a new one for myself. When i deleted the previous camera I expected that I would be able to simpy connect my new Ring Camera to my existing Protect Basic plan, however that does not seem to be the case. When i attempt to do that its taking me through a new subscription workflow and charging another $30 even though my current susbscription is only a bit over 2 months old. How can i connect my new camera to my existing Protect Basic plan?