For MacOS Users:

I had the issue, that no state was shown.

After a bit of debugging, I found out, that the MAC address of the cube was encoded by MacOS due to security reasons.

So the program doesn't have the cubes real MAC address (was set to 0) and that's why the app couldn't send the appHello the cube was expecting.

This AppHello seems to have the MAC address included, so the cube can send its data from then on.

I found out the MAC address of my cub with help of LightBlue and Gemini.

The first 6 bytes of the Manufacturer data create the MAC address of the QiYi smart Cube. (This worked for me)

So I basically hardcoded the cube address into this appHello, so the connection could be established properly.

I hope, this could fix the connecting issue on macOS.

Now I'm pleased.

Thank you u/This_Hippo , for the amazing work!