Thanks, the code from github is running outside of a forum loop and works on a localhost test site. They used the code in loop-forum.php
<?php if (($has_replies = (strstr(bbp_get_forum_freshness_link(), '<a')))): ?>
<?php bbp_topic_title(array( 'post_id' => bbp_get_forum_id() ) ); ?>, <?php _ex('by ', 'bbPress Freshness Author', 'bunyad'); ?>
<?php bbp_author_link( array( 'post_id' => bbp_get_forum_last_active_id(), 'size' => 45 ) ); ?></span>
<?php endif; ?>
This is my code running inside a loop in loop-single-forum.php and didn’t work, will just output my forum title for some strange reason if I post to that forum’s sub-forum.