Container Registry is disabled @ Gitlab.com

We just migrated around 20 repositories from our self-hosted gitlab instance to Gitlab.com. However, some repositories have no Container Registry enabled while others do. We don’t understand what might be the reason of these differences between those repositories. As far as I can read in the documentation it should be enabled by default on Gitlab.com.

E.g., if I visit https://gitlab.com/%PROJECT_NAME%/%REPOSITORY%/container_registry I get the following error:

You don’t have the permission to access this page.

Please contact your GitLab administrator to get permission.

Thanks in advance!