I been using window live email 2011 and suddenly I can't view emails (both read and unread emails) from 2015-2016.

Normally, I see number of unread emails next to inbox, all mail, and important (which should be all same number).

But now I can't see the number of unread emails next to All Mail. (see attached)

However, if I go to inbox or other folders, I am able to locate emails from 2015-2016.

Is there way I can see ALL EMAILS again under 'All Mail'?