That confirms that the protocol is what is called NEC1 in MakeHex and in DecodeIr. It also shows the function numbers.

So far as I can tell, it doesn't tell the value of the "Custom Code" (which translates into the device number in MakeHex and DecodeIr). It mentions the Custom Code and tells you where the custom code is positioned within an NEC1 signal (but of course I already knew that). But it doesn't seem to say what value goes in that position.

We have plenty of other sources of information telling us the correct device number is 4. So I'm sure the device number is not the problem. Your results from MakeHex are also correct. So the problem has to be in how you used those Pronto Hex strings after getting them from MakeHex.