Why is a feature, such as the File Manager, missing for an account when it is enabled in the feature list the account is using?
1) Browse to WHM >> Packages >> Feature Manager.
2) Select "disabled" using the "Manage feature list" drop-down and Edit.
3) Verify the feature, such as File Manager, is not checked. If it is, uncheck it and Save.
4) If it's not disabled on the "disabled" feature list, Edit the feature list assigned to the account's package and verify File Manager is enabled.