@elisa.zoom I suspect the “invalid token” exception when attempting to download files from the Zoom API is due to the fact that the API responds to the request with a HTTP 307 response and modern HTTP clients (like curl and Microsoft’s HTTP client for example) strip out credentials when following the redirect to avoid leaking tokens and passwords. This is what is causing the Zoom API to error out with a token related error message. This problem seems to be similar this one and this other one.