This answer is useless, as it needs to have the Bluetooth connection properly working...
Solution:
- Please download FW upgrade tool from http://download.geniusnet.com.tw/2017/NX-9000BT%20FW%20Upgrade%20Tool.rar
- FW Upgrade Tool.rar and follow steps to solve it.
Realizaré los pasos, y confirmaré por aquí si se resuelve el problema. Por ahora debo conseguir un equipo con windows no actualizado.
It worked for me. I had to find another laptop with windows 7 and Bluetooth, then I followed the steps, upgrading mouse firmaware. Finally I tested again in my windows 10 and works well since then. Sorry about my English and good luck.