I'm currently using a Macbook Pro 13" mid 2012(macOS Catalina 10.15.7) and an iPhone 11(iOS 14.4). I want to stream my iPhone audio to my Macbook using Mac Audio Midi Setup.
As shown in the image above, I have the option to press
Enable. After I press it once, I can see a new iPhone device appear on the Input device list but it quickly resets itself and disappears. I don't know what's going on.