Hi RoboKanuni & digiklinci
We are so sorry for the bluetooth connection issue. As you know, there are various Bluetooth adapters on the market, it is difficult for us to guarantee full compatibility and stable connection, that’s why we developed our own Bluetooth dongle which support almost all of our products to ensure stability and fully compatibility.
Consider that some users still want to use the pc inbuilt bluetooth dongle, we have figured out some solutionsin this document you have already tried it, but this still can’t solve the problems on all the computers. Since you have already tried this document, but the mBlock 5 software still can’t detect the Bluetooth, we can strongly suggest that you can use our special developed Bluetooth dongle or use the USB cable connection which works as well. Sorry again for letting you down.