Question about Logitech Harmony Hub

Good day,
Of course, the hub comes with software. This software is available for iPhone/Android & Mac and Windows. I can only provide information for the Windows version. To register/configure the device and to update the firmware, it is necessary to connect the hub to the computer via the cable supplied. In the software you can configure all actions and learn new commands. To do this, simply (1.) select the action, e.g. volume, and then (2.) transfer the corresponding IR code directly to the hub by pressing the respective button (the hub must be connected to the PC for this, but perhaps this has changed in the meantime). I have owned this hub for about 2 years, so it is possible that the operation has changed in the meantime, but basically I was able to transfer all common remote controls. The only thing I complain about is that despite a direct line of sight and really good conditions, it sometimes happens that a device doesn't react, but maybe that's a special case for me.