Blackmagic intensity pro 4K capture card not detected

I’m trying to get this capture card to work.
I used it previously on a linux mint installation, and I just tried it on a linux mint live to see if it was still working, which it is.
The easy way would be to just reinstall mint, but I wanna use manjaro, so hopefully I’ll manage to get it to work and learn something while doing it.

Anyone can help me?

What I did so far was installing the decklink and mediaexpress from AUR. It’s pretty much the same stuff I had installed on mint, except it doesn’t work.