What about tidal iphone app, i have E50 which has MQA renderer on optical. I know for sure Tidal iPhone app does first unfold and then over tidal connect to topping e50 should do second unfold but it’s not doing it
Tidal app with USB DAC (or USB to optical converter) directly connected - Tidal app does 1st unfold.
Tidal app casting via Tidal Connect to WiiM Mini or any Tidal Connect streamer - never does 1st unfold, with any hardware.
So what you are seeing is completely normal.
There's no issues.
Just wait for WiiM Mini's MQA Core Decoder update in next 2 months. Then your E50 optical input will perform as MQA Renderer because the Core Decoder is WiiM Mini
WiiM Mini will then function like a Bluesound Node optical output, with Tidal Connect
I think your confusion comes from misunderstanding how unfold is currently working with your current stuff. And how it works with other streamers.
I have a Bluesound Node here so I know from practical experience.