Source for Infrared Fresnel Lens Covers on Blink and Blink XT2 Cameras

Squirrels have chewed holes in the PIR Fresnel Lens covers on both of my cameras. I easily tore down one of the cameras and popped out the lens cover. Blink/Amazon doesn’t sell these $1.00 parts and I cannot find their part number. I’ve looked for hours for a source, but am unable to find lenses with the right dimensions. Even if I did, I’m not sure what Focal Length I should select. Does anyone know of a good source for replacement Infrared Fresnel Lens covers for Blink cameras? I did go to the Blink community too but got flamed for thinking I should be able to fix the cameras…