[Q] lolipop issue......help please... topic

Installed update on 24 feb. Working like a charm . improved battery life by 60-70% . but there's a problem with the multiuser option. First of all in settings, the user option is not shown. Secondly, when searched in settings , the option shows but when clicked , a blank page opens. Even cant open multiuser option from status bar or quick settings.
Not rooted device.
Please help.