Video capture won't work for me with MacMini MacOS Catalina 10.15.4 – Iriun Webcam for PC and Mac Review

This is a slick app, which since it's hard to find webcams now because of the pandemic, I hoped to use with ZOOM. The app generated the audio stream from my iPhone but the computer cannot capture the video stream; therefore, I can't use the app to participate in Zoom meetings on my MacMini (late 2012) computer (where my connected screen is so much larger). Can the developer update this great app so it can work on MacMini computers running Catalina 10.15.4?
Review by Darjonnc on Iriun Webcam for PC and Mac.