Why is the recorder not recognized on the computer as a flash drive (although it should)?

Question

laptops

The recorder should be defined as a flash drive, but neither Windows 10 (on 2 different laptops), nor Android 7 and 11 see it. In general, nowhere - neither in the Disk Administrator, nor in the Device Manager. The device from the Country of Copy-paste - "Ultra thin portable Voice recorder MP3 player K2" with a capacity of 8 GB writes and plays files, but it is impossible to get to the files themselves, although the manufacturer declares. Link to the device - https://www.cafago.com/en/p-v8371.html