Based on the information you've provided, that doesn't appear to be a valid site; domain.instructuremedia.com should be replaced with your instance in place of domain, so something like collegename.instructuremedia.com.
If you are the admin of your instance, you may have to try setting up your Zoom connection to studio once more, possibly by following this guide, though it depends on what you're doing when you get that error message. If you aren't the admin of your instance, you will definitely want to reach out to your admin, or to Canvas support so they can help you get in touch with the admin of your institution.
