Audio Sync issue - Blackmagic Camera for iOS app

Hi, I am trying to use the Blackmagic Camera for iOS app but have an audio issue. When I use the app, the audio from my external USB microphone is not in sync, and I do not see any options in the app's settings to adjust the sync manually.

When I use Apple's native iOS camera app or Apple's Final Cut Camera application, the audio from my external microphone is in sync immediately.

Is this a known bug? Is there a known fix for getting Blackmagic's iOS camera app to sync audio correctly?

Thanks!