Midiguitar au cubasis3

hey guys,
i have midiguitar for desktop and ios.
anyway, i discovered some issue with ios, midiguitar au inside cubasis3.
its indeed working with one instance (zero gain) is running standalone in the background. weird.
there’s midi generated inside midiguitar au, as you can see when you put in a keyboard,
but it can’t get midi out, without running a standalone instance in background.
lot apps can put midi out, thats why iam wondering.
same with A2M, which is the only alternative i know so far.
am i missing something?