How to attach Ring Doorbell 2 to corner wedge

The Ring Video doorbell I bought today at Costco came with a corner mount that doesn’t have any pre-drilled holes to line up with the doorbell. How do I attach the Ring doorbell to it?!? Is this a mistake?

Hi @salmal. Would you be able to share a photo of the corner mount that you’re referring to? I’d like to take a look and see, but ultimately you may want to reach out to our support team for this concern. They’ll be able to send out any missing parts or replace any parts that may not have arrived correctly, such as the corner mount you mentioned.