Try cloning this camera and make an area of interest, being the image resolution is at 1520x2688 the image gets resized to 640x640 and the USPS truck is to small to identify.
For the OCR you should look at Fast Plate OCR, it is more accurate then PaddleOCR. This what Blue Iris is using for the OCR
https://github.com/ankandrew/fast-plate-ocr
I updated to v6.0.7.2 and lost all my camera groups. Does anyone know how to get back the groups. I did downgrade to v6.0.7.1 and the camera groups are still missing