Sorry to hear about the recent issues you have been experiencing.
→ For USB Microphones on a MAC: Go to Audio Midi Setup, this is found in your Applications > Utilities folder.
Create an Aggregate device (https://support.apple.com/en-us/HT202000
) and set the input for the aggregate device to the Yeti, set the output to the output source you wish to use.
In StudioOne you will set the "Audio Device" setting in Preferences > Audio Setup to the Aggregate device you set up in your AudioMidi Setup. From here you will be able to use the Yeti.