PS5 KM2 Not Working

Just purchased the KM2 and trying to play a PS4 game on my PS5 with no luck.

Followed the setups, checked firmware, downloaded game on KM2 app, set the PS5 controller settings to usb only with a data transfer cable. It still wont register the controller!

Everything is lit up, buttons work as I’ve remapped everything already and when I switch from KM Emulation to KM Direct the PS5 registers those keys.

Does the PS5 controller need a beloader to play PS4 games? I’m at a loss here.

TIA.