There is no ownership prompt

I purchased a home from an elderly couple with a Ring doorbell installed. They don't know how to remove their Ring devices from their account and it's not very practical for me to drive to their new address in a different state to walk them through it. When I try to register the doorbell or Chime, the app says the device is registered to someone else and links to a help page. The help page says to "follow the prompts" in the app to request ownership of the device. **There are no prompts in the app.** The documentation is wrong.