Hi @global
Thanks for reaching out!
Make sure that your user has the right permissions enabled for your role so you will be able to see the scopes available for your app. An admin on your account will need to grant you permission to create and manage webinars
Interesting @global
Could you please share the way you are generating the token (entire request URL) and the request URL you are sending to the webinar endpoint so I can take a closer look to this issue