Hello @tommy,
Our issue is exactly same as this ticket
https://devforum.zoom.us/t/web-sdk-in-meeting-chat-messages-not-sending/25761/31
We do not want/need to allow participants to chat with each other, we only want them to chat with host and that setting is enabled at our end. Please go through this and provide a fix soon, it is very urgent.
Thanks in advance,
Namrata Mathur