for what ever reason, you have removed the two lines
<?php /* Archives Pages. Displayed on a specific static page, if configured at ATO -> Archives Pages: */ bfa_archives_page('<div class="archives-page">','</div>'); ?>
<?php /* Displayed on MULTI post pages if activated at ATO -> Next/Previous Navigation: */ bfa_next_previous_page_links('Bottom'); ?>
from ATO->Style & edit CENTER COLUMN->Content BELOW the LOOP. The second line handles the navagation at the botom of the page on a multi post page.