I just bought the Vocal bundle which includes DeBreath. It seemed to install OK but when I opened Garageband all the effects were there except DeBreath. I went to support and got a nice email back explaining that all the other effects were stereo, but DeBreath was mono, so I needed to open a mono track. I opened what I think is a mono track using the double circle 1-2 icon in the Smart Controls area, however try as I might I cannot do anything to show the Debreath effect - the first one in the alphabetical list of Wave Effects is Doubler
I have the latest version of Garageband and Catalina 10.15. For interest, I opened Audacity, and Debreath and all the others were indeed present. This is driving me nuts, can anyone advise?