iTunes, Spotify etc. not able to Play through ST1 (QU16)

Qu Qu Troubleshooting
1

Yes, I’ve read the other Discussion about it. A&H says at the End, that everything is working fine.
But NOT EVERYTHING.
No Problems with my DAW (Logic) through ST1. But the other Apps (without own Audio Config) do NOT work that way (Yes, I did all the Configs.)…
Weired, the Test Sound in Audio Midi Setup also works through ST1!!!

But why do iTunes, Spotify etc. not play through the desired Channels (Only Mono Channels 1+2)
Anyone did this successfully?
Again? I’ve setup everything (Audio Midi Speakers to 17 + 18, System Preferences and on QU16 ST1 to USB B)

2

Oooh, I’ve also tried doing it in different ways. And neither option works. Moreover, personally,
in my Spotify account is missing plays. And I don’t know what this is about. And how can I solve this issue.

3

Just to confirm, are you using the USB B as the input and not the analog input jacks?