The red text below the audio device selection is shown when the admin configured device cannot be found, causing the app to revert to back to the Windows default speaker/mic.
Does the audio device selection drop down enumerate the audio devices you expect?
I would recommend running mmsys.cpl to see if Windows thinks the audio devices you configured are connected or if those devices are getting reinstalled with a new device name (ie. <Audio Device Name>2,3,4...) which would cause the behavior you are seeing.
