Add a device to Ring Plus Plan

Hello - We have had a ring doorbell for over a year and really love it. We had subscribed to the basic Ring Protection Plan. We just purchased and installed a second security camera. I sucessfully upgraded to $100 a year Ring Plus Plan, but I don't see that the second camera is covered. I can see the live view on my cell phone through the Ring App, but I can't select it for coverage on the website. I can't find a customer service number to call for help. Would you be able to pair it so that both the doorbell and the camera at my home address are both covered under the Ring Plus Plan? Thanks!