Hey @bwynkoop,
Thank you for reaching out to the Zoom Developer Forum. I’ll first note that the Web SDK does not support being displayed in an iframe or being resized. We are working to provide a more customizable version but we don’t have iframe support on our roadmap.
With that being said, it sounds like you may need to enable Web Isolation to allow the Gallery View button to display. Please see the following post:
Let me know if that helps.
Thanks,
Max