Protect plan

I had a Ring doorbell that gave me nothing but trouble, and then completely died. I returned it to where I bought it a couple of months ago and got a replacement. My subscription to be able to see the videos has not worked since then, keep getting the message that I required a subscription to activate the protect plan. I logged in and found that I still had two devices listed. There is no way to identify the two devices on the site. I cancelled the subscription.How do I ‘delist’ one of the devices, and resubscribe to the other, current, door bell?