Hi Cloudflare experts, has anyone had issues with CD+Zoom Room(Google Meet)?

Dear Cloudflare Experts,
My company is using zoom room with google meet interop(plugins).
We are located in China and all the meeting rooms have the same issue.
When we click join google meet from zoom room controller pad, it just shows unable to join the call.
I had already raised a ticket with zoom, while we think the issue should be with cloudflare.
If anyone has ever touched cloudflare+zoom room with google meet as interop.
Please help. We cannot find any blockings in our firewall or cloudflare zero trust logs.
Thank you.

Best regards.