Any idea? 

Hi @percysgrowroom ,

I will provide that information to our developers' team for consideration.

Posted by: @percysgrowroom

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@tutrix, do you know how to do this mate?

I don't have any subforums, so I can't test it.
But I use these 3 codes to show all topics and posts in a category.

<?php $counts = wpforo_forum($cat['forumid'], 'counts'); ?>
<?php echo wpforo_print_number($counts['topics']) ?>
<?php echo wpforo_print_number($counts['posts']) ?>

Inserted in the forum.php (layout) like this

<div class="wpf-cat-count"><?php $counts = wpforo_forum($cat['forumid'], 'counts'); ?><span class="wpf-topic-count" wpf-tooltip="<?php echo wpforo_print_number($counts['topics']) ?> Themen in '<?php echo esc_html($cat['title']); ?>'" wpf-tooltip-position="top" wpf-tooltip-size="medium"><i class="fas fa-layer-group"></i><?php echo wpforo_print_number($counts['topics']) ?></span> <span class="wpf-post-count" wpf-tooltip="<?php echo wpforo_print_number($counts['posts']) ?> Beitr&auml;ge in '<?php echo esc_html($cat['title']); ?>'" wpf-tooltip-position="top" wpf-tooltip-size="medium"><i class="fas fa-list"></i><?php echo wpforo_print_number($counts['posts']) ?></span></div>