Great news! We are able to upload our new algorithm dynamically to be effective. With v2 4.9.4.51 and Pan 4.10.3.65 installed, please go to device settings → Restart Devices and then you will be able to detect vehicles again! 
We see nice improvements on person detection. We are still new to vehicle detection. Please keep sending videos to us to help us improve! We will all benefit from the effort! Thanks!