Logic Pro no longer receiving MIDI from SL88 keyboard

Hi, I'm tearing what little hair I have left out trying to get my StudioLogic SL88 Studio to connect back up to Logic Pro after moving house and having to set up the studio again. Hopefully someone here will spot what's going on and hopefully point me in the right direction.

Mac mini (Apple M1) running IOS 13.7.1

Logic Pro 11.0.1

Steinberg UR22 audio I/face running Yamaha Steinberg USB Driver V4.0.3b

The UR22 is working fine - I can play audio files from Logic thru it and hear it perfectly.

But there's no MIDI signal being received in Logic. The main transport control panel (when set to Custom) indicates there is no IN and no OUT. The USB out of the back of the SL88 is going straight into the Mac. I cant work out why no MIDI is getting into the Mac. Please can anyone help? Maybe a few "have you tried...." suggestions.

I'd be very grateful for any help!