Disappearing WDMyCloudMirror iTunes Shared Library

My Cloud OS 3 Personal & Network Attached Storage My Cloud Mirror
3

I haven’t tried any older versions yet, but should be able to over the weekend. I did find another post with what sounds like the same problem: Itunes Server on My Cloud Mirror Disappears

That poster had an earlier firmware version and two client machines running iTunes 12.3.3.17 and 12.3.2.35. No solution for that post.

I might try an iTunes 11.x version to see if there is any impact.