I just bought the iRig keys pro and I'm having this problem with the pedal, I tried the sustain input with two different pedals that work perfectly fine with other keyboards, but it doesn't work the right way with this controller, it's actually a reverse or inverted effect.
When I press it down it doesn't sustain, and when I release it, it does, which is very strange and annoying for any keyboardist. I even tried the iRig keys 37 pro too, and I got the same problem, which makes me think that either these two keyboard controllers are designed that way or I am having an extremely bad luck to buy two different models with the exact same issue.
I actually returned the first one, iRig keys 37 pro, because of that, and now I got the same issue with the new one. I even made sure to plug the sustain pedal in before the controller was turned on or connected to the computer or smartphone, I did reset the keyboard, but nothing changed. I already contacted the customer support but they are not answering.
Does anyone have the same problem? How can I fix this?