Security Screws for Ring Video Doorbell

I purchased a Ring Video Doorbell from from Home Depot. The two security screws were not included in the box. I called customer support, and they said I needed to talk to Home Depot. I go to Home Depot, and they search all near by stores, but none have the doorbell. HD says if I can find out size of screws, they will give me two. I call Ring customer support again. After 18 minutes, the guy tells me the size of the screws is 35mm, and says he will email me the info. Obviously the screws are not 35mm as that would be like an 1 1/2" bolt. The info he sent me in the email was a link to Amazon for a screw kit, but no info on the size of the screws. Total waste of time and two trips to HD. Does anyone know what size the security screws are? Ring customer service = two thumbs down!