This keyboard needs NO additional drivers, plug in the Nano USB dongle and put the batteries in and you're done. If the keyboard doesn't respond then the get a new one, these are so cheap there is not reason to waste time on it.
ONN ONA11HO088 Keyboard User Manual
File: 2026097.pdf
ea413bf9b54835517823dcbaed50243bbb6e9401a80be282d5c8695043326755