ManyCam virtual webcam not detected on M3 mac

I recently upgraded from a 2016 intel based macbook pro, to the new 2023 M3 macbook pro.
Manycam works on my old computer intel mac, but not new M3 macbook pro.
Firefox and Chrome are not detecting the manycam virtual webcam. I am using the latest version of firefox and manycam and followed this doc
But still does not work.

Is there anything else I can try?

I got the same issue, hope someone answer or response how to fix,

I have the same issue with MacMini M1. The Manycam virtual camera does not show in Zoom.

M2 Mac same issue. It appears that ManyCam support on this forum is discontinued entirely. Messages from November of last year are going unanswered. Is ManyCam still in business?