They do work as I expect on the regular remote, e.g. hold the volume up button and the signal is repeatedly emitted.
So one question I have is: could this be due to the Pronto code being generated incorrectly? Some context here, I used the following image to generate the pronto codes myself:
I took the customer code and key-code, then plugged them into this conversion tool: https://www.yamaha.com/ypab/irhex_converter.asp. So for example the power button is 6030-02 before pressing the Generate button.
The thing about this tool though is there is nothing about whether the code should be one-shot or continuous as mentioned in the table. Is this something I need to provide when generating a Pronto code?