iOS 16.7.2 not recognising soundcard

I've been using my Motu Ultralite Mk4 soundcard to use with the Camera App to record video via the USB to lightning adaptor working flawlessly for the past few years. It has suddenly stopped working and I suspect that it is due to the latest iOS 16.7.2 update. It seems like it is not recognising the Motu Ultralite Mk4 as I can't see this in the AUM app as well. I've tried using the same cable and adaptor with a different soundcard, i.e. RME BabyFace and it is working. Hence, I'm suspecting this is s/w related.

Anyone having a similar experience?