After the latest firmware update, my C425 gets offline regularly (offline from internet but connected to wifi). All our Tapo camera are online (C200, C520WS, C125, etc.). Small area only, so not...

Did you try to reboot the camera?

Instead of using vehicle detection, can you just use motion dewtection instead?

If you can have the service provider go and set the new modem/router to be the same as the previous one (same SSID and password), I'm certain this will work.

Are you using VPN?

@HARJAPKHAIRA can you see the TP_CAM..... ssid?