Logic Pro X sustain not releasing

I have been using my M-Audio Hammer88 controller happily with Logic Pro for two years. I have a Yamaha sustain pedal plugged in to the sustain input in the back of the Hammer88. In the last week, when I record the keyboard into a Logic Pro project, the sustain pedal will not release, and all of the notes continue to ring, making a sonic mess. I have tested the sustain pedal on a Technics keyboard (not a usb keyboard, but a standalone keyboard). ... it works fine. I have two other sustain pedals (an m-audio, and a technics) ... they both work fine plugged into the Technics keyboard, but all 3 produce the same problem in Logic Pro on my Mac Studio when plugged in to the Hammer88.... when I press the sustain pedal and then release, the notes continue to ring as with the Yamaha. So, it's not the Yamaha pedal only ... all three produce the same result. I assume something has happened with the audio/midi setup in Logic Pro, which is not receiving a stop message from the sustain pedal. I have hunted around in Logic Pro, but I don't know the parameters to change to try to get the M-audio's stop signal to register. It seems that the pedal is ok, and the m-audio keyboard is ok, but the signal to release the sustain is not getting through to Logic. As I have been trying to fix this, I have also lost my C note below middle C (C3) ... does not play. Thanks for any help or suggestions.