Forbidden when launching a meeting through Webex Education Connector

[metheoryt]

Hi! I am trying to set up a Webex meetings integration with Moodle LMS through Webex Education Connector.

I am using this guide to set it all up, and I've followed all necessary steps.

Now I could see a webex menu inside my Moodle installation, but when I click to join a meeting from this menu, I find myself on page with url https://tdhub.webex.com/cmp3300/webcomponents/widget/invaliddomain.do with next message:

"Домен URL-адреса заблокирован настройками, которые не были включены администратором веб-сайта. За дополнительной информацией обратитесь к администратору веб-сайта."

I've checked twice CORS allowed domains list, it contains lti.educonnector.io as per guide. Now there is nothing else I can do.

I am asking for help, thank you.

[Kathy N.]

Have you tried to re-authenticate your account with Webex?  Click on the "Authorize" icon and follow the prompts.  If it says Logout, proceed with the Logout and then log back in again.  

If this is a new installation, review the administrator settings again to ensure all settings are correct.  If none of this corrects the issue, I would recommend opening a TAC case.