Thanks for the post. Could you provide more information or context regarding what you are trying to do here? Are you sending a request to Zoom REST API using JWT token to create a meeting? Is the JWT token expired?
If you are able to join a meeting in SDK, that means your SDK key & secret is working well. If you failed to create a meeting using Zoom API, then the issue might be related to the API key & secret or the JWT token. Are you able to use other RESTful API in https://marketplace.zoom.us/docs/api-reference/introduction? If not, then your API key & secret might have some issues.
Thanks for the reply. It seems like the issue you are facing is with API credentials and the Zoom API now. Let me forward your question to the API section and have the API experts to further help you.
If the user has used user name and password to create their Zoom account, then getting a users token via the token query param will return nil. This means the user created their Zoom account using Google or another SSO service.