Word of warning on Ring doorbells. I believe that the only way you can view non-live footage with them is by subscribing to their cloud-based storage plan. Which means that they are not much use for security without additional costs. Of course, any footage stored in the cloud would be safer than that on a local SD card in rival products...

sounds like you have the basic plan for one device and you need to upgrade to the next plan for the second device to save clips