After updating iPhones and iPads (current iOS/iPadOS, etc.) on Friday to HR 4.3.0, my Yamaha RX-V3071 has stopped responding to the App over IP. No feedback, etc. It still works on the Builder simulator no issue and functions normally in all other Apps. All other devices still functioning, including other Yamaha receivers.
I notice in the release notes: Added support for older Yamaha receivers (RX-V3900)
Not sure what that translates to, but the Builder has not changed so I am unsure how to proceed. I am guessing it is not a coincidence.