In researching this further, it appears that the Tidal Connect app is problematic in general. Web chatter about it is not flattering and offers no real definitive solutions. So it may not be that the root problem was created by ifi. HOWEVER, ifi is marketing the ZS product as supporting Tidal when it relies on a flawed interface.
Based on my experience (and mine alone) it is very misleading to promote the ZS as supporting Tidal streaming. It’s still quite possible I’m just not using the interface correctly. I’d love to hear that there’s a simple solution to make it work smoothly.
But my current situation is that I own a product that does not reliably do what it claims. It’s a shame, because the ZS sounds very good when you can get it to work. YMMV…