Great the first time -and then could never find desktop app – Iriun Webcam for PC and Mac Review

I am very disappointed as this app worked so well the first time 2 weeks ago. It solved my need for a Webcam for various situations from meetings (headshot) to yoga (full body at a distance). And it has never worked again. It can never find my desktop app despite reinstalling the software several times. Can't waste any more time on troubleshooting this with such limited documentation available.
Review by SueMentors on Iriun Webcam for PC and Mac.