Using Slido with Webex Meetings does not work with Manycam

I am using Webex Meetings and Manycam for on live teaching, I’m trying to use Slido for live polling directly with Powerpoint presentations, but Manycam does not show the Slido poll slide.
If I use the “share” option directly from Webex it does work, but not if a use Manycam as a virtual camera.
Any suggestions?