Dixa uses Window's sound settings for microphone and speaker.If you are missing sound from the microphone or headset, please check the following:Right-click on the speaker icon in the taskbar.Select SoundsMake sure your headset or dongle is selected as both Playback and recording device.Also, make sure your headset is not listed under Bluetooth Devices. If it is, click on the device and remove it.If your headset comes with a dongle, it should be listed here.The screenshots are using the Jabra Evolve 75 headset with the Jabra Link 370 dongle, but the steps apply to all headsets.Go to Sounds settings.Playback deviceRecording deviceBluetooth & other devices menu