its joomla 1.0.13 and joomsef v2.3.4

thanks

check this site, www.cleanserevolution.com/ some time ago i removed its mata keyword and mata description tags but now my client wants these tags back on the site i don't remember what i did with it now here just showing its title tag not showing mata keyword and mata description tags

i also check this code on this file includes/frontend.php

$mainframe->appendMetaTag( 'description', $mosConfig_MetaDesc );
$mainframe->appendMetaTag( 'keywords', $mosConfig_MetaKeys );

it was commented i uncommented it but still mata keywords and mata description tag is not showing on the site can you help me in this regard