First, in wwise, I set > session category to 'AkAudioSessionCategoryPlayAndRecord'.
Then, the permissions for backend playback are also set in xcode.
Using unity's native sound engine, it can play sound normally in the background.
However, after wwise enters the background, the wwise voice executes' Suspend'.
In the code, I also delete the 'suspend'.
I would like to ask, what steps have I missed?