Hi @elada,
We’re sorry to hear about your frustration. To help you out, if you can please follow the steps in the link below on how to find your API Key/Secret [1]. If you have not created an app within Marketplace before, just skip to Create your JWT app section.
In addition after you get your API Key/Secret, if you want your developer to quickly test an API, we do have sample JWT for you to test out as well [2].
1 - Finding your API Key/Secret Credentials in Marketplace
2- https://marketplace.zoom.us/docs/guides/authorization/jwt/generating-jwt#obtaining-your-api-key--secret