As noted on https://marketplace.zoom.us/docs/guides/build/jwt-app/ Zoom is ending support for JWT on 6/1/2023 and requiring users to switch to Serve to Server OAuth: https://marketplace.zoom.us/docs/guides/build/server-to-server-oauth-app/ This app will need to be updated before that date or it will cease to function. If I have a change to implement this, I will submit.