Launchpad inputs only few buttons

Hi guys,

I’m trying to connect a Launchpad to UE4 via LightAct. It seems to work fine except one thing. For some reason it doesn’t read 64 “greed-buttons’” values. Navigation buttons inputs different values, but greed-ones seem to be not even pressed (when navigation buttons are pressed, the value is 127, when released the value is 0) and returns previous button’s value.

Do you have any idea how to fix that?