We have a very similar problem: https://devforum.zoom.us/t/zoom-web-meeting-sdk-has-stopped-working-since-last-month-joining-meeting-timeout-fail-to-join-the-meeting/94672
- Do you have SDK key & SDK secret in App Credentials section of your Meeting SDK app in App Marketplace? Or only Client ID & Client Secret?
- For the API calls, do you have a separated OAuth app, or are you using the OAuth integrated in Meeting SDK app?
- Are you creating the meeting with OAuth for an external user, and then joining as host with the user ZAK token? Or you only use the OAuth / Meeting SDK for your own account / sub-accounts?
- Have you checked if the error happens with your own account?