If your radio is not responding to the Software, then swap the RX and TX connections to the USB dongle. Some dongles have the labels swapped.
Tested the interface with CE63 software on Windows 10 64bit and 32bit. (After setting compatibility mode to Windows XP SP3).
Also note the Pins 1 and 2 is shorted in the diagram. This works. However, one of them may be optional i.e. no connection would be required to either 1 or 2. Please drop a comment if you tried and confirmed the same.