This article describes the steps to take when you do have a missing functionality such as Quarantine Action, Email Threat Detection and Response Tabs.
Email Security.cloud
This is due to an Issue with a License binding to your account or an expiry Issue of the current license for your tenant. Hence, a contact with the Support will give you more details about the missing service.
To have more details about the missing service please contact Broadcom Technical Support.
Alternatively, we can review your account and possibly enable the missing service for your account.