I downloaded their demo version along with their sample audio which I followed along with and it worked like magic.
Then I tried some of my own audio which needs repair and it was not nearly as clear cut. Their audio sample with a siren is clearly something easy to see in their spectrum but when I tried to remove cricket sounds on my audio sample it became a lot less obvious where those sounds were in order to be removed.
I'm looking forward to working with it and learning it. Anxious to hear what others have to say.