A. Try using a different audio track that is compatible with speed adjustments. You can do this by selecting a different audio file from the app's library or importing a new one. Make sure to preview the audio after adjusting the speed to ensure it syncs correctly with the video.

B. If the audio disappears, consider exporting the video without audio first, then re-importing it into the app and adding the audio track separately. This may help maintain audio integrity during speed adjustments.