What you need to do is load the coil serial manually using remote.
Do the same thing with headphone modul.
Pay attention,,many make sure you have your letters and numbers correct.
Now if you still have problems....
Try this,,,turn off remote and just use headphone module. Load coil set number in headphone module,,,and see if it works.
Even if loaded incorrectly ,,,,,,you may get some visual info on remote,,,,but no tone.
Make sure you are not confusing letterO with number 0 for example.
Do the same thing with headphone modul.
Pay attention,,many make sure you have your letters and numbers correct.
Now if you still have problems....
Try this,,,turn off remote and just use headphone module. Load coil set number in headphone module,,,and see if it works.
Even if loaded incorrectly ,,,,,,you may get some visual info on remote,,,,but no tone.
Make sure you are not confusing letterO with number 0 for example.