By far the most common cause of a "missing" feature is simple: your role doesn't include the permission for it. This is expected behavior, not a bug — see "Understanding Roles and Permissions" for the full explanation.
Quick checklist
- Ask an administrator (or check the Roles page, if you have access) exactly which permissions your role includes.
- Remember permissions are split per action — having "view" for something doesn't automatically give you "create", "update", or "delete" for it.
- If you can log in but land straight back on the public homepage instead of the admin dashboard, you currently have no permissions assigned at all — ask an administrator to assign you a role.
If you believe you should have a permission you don't, contact whoever manages Users and Roles for your organization — day-to-day content editors typically can't change their own permissions.