arch metal detector

I didn't know where to write, maybe there are specialists here.
AMD vime 20-17-1 BLOCKPOST PC Z 100.
The pass counter is frozen at 19998 and does not count anymore. Nevertheless, the alarm counter is further triggered according to the configured mode and keeps counting.
How to expand / reset the counter and did not find it? The instruction booklet has 0 mass for this situation.
On the Internet, I found only exactly the same booklet in PDF and that's it.
Who knows - give what thread of information. And further. Why does she have a USB input. I know why, but there are no instructions on how to use it either.