FR counetr = 0. FD is working, but no FR event. MAybe you can try add a face to the library and than try again. My example is not inthe office now, i can not test it.
Before installin IPC + Strobe take care of that electrical parameters of both devices are equal (for example: camera alram out for Eco-Savy IPC can provide 300mA, for Ultra - 1A). So be careful.
I suggest, that if there is a need to use VTO directly from a Smartphone, than look for VTO2111D-WP.
If you need to record a video stream from a VTO to your Dahua NVR5XXX-4KS2, than you need to configure "Add device" manually and write there an RTSP command string, than it will be possible to...
It is a strange thing. If you use config tool from official Dahua site and it doesn't do the update it means you try to update with uncorrect FW. Find a correct FW.
Also, are you sure about http port 80? Maybe it was changed? Can you access the device from SmartPSS?