Virtual camera not working in browser for webinars

I’ve been using mimolive as a paid member since last year. I love the product and use it every day to teach on Zoom/Skype etc. HOWEVER teaching live webinars using webinarjam or ANY web based system often causes problems. Perfect example, last night, taught a webinar for over 150 people.

Although it normally works, the virtual camera out would not show in Chrome, Blisk, Firefox, Sarafi. 3 restarts of the MAC and mimo. New mimo file. New version. Very stressful and killed the webinar.

Any solutions please? Tried starting mimo first, tried mimo after browsers too.