Hi @ana_mbedoya welcome to the community! Are you using the OAuth app type? Currently the Zoom Apps app type doesn't support account-level authorization.
For the beta program, as a workaround, we are using the OAuth app type and then manually enabling access to the Zoom Apps SDK, according to the dev forum https://developers.zoom.us/docs/zoom-apps/guides/create-za-for-zrc/ on Creating Zoom Apps for Zoom Room Controllers (Beta)