Logout/Accessibility options gone

Hi, me again.

We have almost finished out Portal, but we have hit a snag.

We can log into the portal no issue, but the logout and accessibility icon, normally on the top right of the screen in the navbar has gone.

I have been into the interface option Header and Footer and its all ticked, so it should be there. Have I missed something, does anyone know the CSS class for it, or if we could have hid it somehow?

Any and all help would be appreciated!