4d Cape70t Issue with GPIO

Hi everyone. Recently I bought a LCD cape for my beagle bone black. It called my attention because it has expansion headers so I can use the available pins for something else. I was trying to test them out using python Adafruit GPIO library. I don’t know if I have to declare something, datasheet doesn’t have any information about this and seems to be everything should be fine. Also 3.3 v, 5v and gnd pins are working fine. Just GPIOs are failing. I haven’t tested any analog pins since I won’t be using them

Any help in advance will be appreciated

Regards