I have figured this out. I guess you have to register the site AND you have to register it again for video displays? (https://premium.wpmudev.org/wp-admin/profile.php?page=vidapi)
Is this spelled out clearly somewhere obvious? Every time I do an install, I get stuck and have to dig around for an answer. For example, on the page that says access denied and check registration, why not give that link above to do the right KIND of registration?