How can I use a Wamo Pro gamepad in a desktop Windows PC?

I have a Wamo Pro which is a gamepad mainly aimed at iOS and Android mobile devices (it works fine in my Android phone), but despite being also advertised as being compatible with PC, the instructions never say anything about how to use it in a PC.

I've searched the Internet and all I found was articles about using it in mobile devices. The only thing I've found about PC usage is a video which shows the Wamo Pro working in a PC, but no indications on how to do it. Why going through the effort of recording a video and uploading it to YouTube only to not tell how you did it? That's unhelpful.

Anyway, does anyone know how to get this gamepad to work in a PC? (my current OS is Windows 7 and I already have a USB bluetooth receiver which works fine with a WiiMote). Thank you!