Hi, how can I regain access to Admin Console for an organization which does not have any admins?
the plan owner can assign admins.
Thank you for quick response.
But then comes the next question: Where could I sign in as the plan owner?
start here to learn about the admin console, https://helpx.adobe.com/enterprise/using/admin-console.html
and if you're overwhelmed and/or otherwise need help, https://helpx.adobe.com/enterprise/using/support-and-expert-services.html
If you can't get access to the Admin console because you are not an admin, as the plan owner you should have an Adobe account rep and customer success manager tied to your company's account that you can reach out to. They can convert you to an admin for access to the Admin console.