QoS Warning, Lost I/O on Surface. T112 Idr48

Hi everyone
I’m in trouble with an ilive T112 and an idr48.
Qos warning ace port A,
Lost i/o on surface, and the auxes masters…
Not passing by a switch, already tested 5 diferents cable, even a Cat7 3m all new… Nothing.
Please help me !!! ???
Does someone live in France by any chance ?
Near Bretagne ? (Brittany for our english people)
Need it working by thursday. Already send a ticket to A&H support. But it’s complicated for my tour to send it…
Thanks every one for your time.
I’m open to every possible solution.

Not sure what troubleshooting you have done - have you attempted to network connect idr to the t112 directly, so to create a 3 node network - idr, t112 and surface? This would eliminate possible issues with your switch.