Connecting 2 midi controllers to hog pc

Hi, I’m trying to both connect an Akai APC Mini MK2 and an qunexus keyboard to hog PC to control different things using midi. They both work fine on their own. But when I connect both, the second one I connect will not send midi information into Hog PC. I don’t understand what I could be doing wrong. I’ve heard from others that it should be possible to connect 2 devices to hog pc at the same time. Does anyone know how I can solve this problem?