Stream Elements Canvas Not Showing Existing Audio Sources

I am trying to setup a vertical canvas in Stream Elements Canvas within the SE live OBS plugin. When I try to add an audio input or output, it does not show any of my existing audio sources. This is the case even if I add an audio source to the canvas; the audio source is still not found if I try to add it to a different scene within the canvas.

I do not have this issue with video capture sources, I can see all my existing ones.