You should use a child theme for editing theme files. If you don’t currently have a child theme you can download one from the theme web site. Then copy single.php from the parent theme to your child theme. The default code has the post tags above the author bio. Edit single.php and move “the_tags” line below the “author_bio” code:
<div class="clear"></div>
<?php if ( ( ot_get_option( 'author-bio' ) != 'off' ) && get_the_author_meta( 'description' ) ): ?>
<div class="author-bio">
<div class="bio-avatar"><?php echo get_avatar(get_the_author_meta('user_email'),'128'); ?></div>
<p class="bio-name"><?php the_author_meta('display_name'); ?></p>
<p class="bio-desc"><?php the_author_meta('description'); ?></p>
<div class="clear"></div>
</div>
<?php endif; ?>
<?php the_tags('<p class="post-tags"><span>'.__('Tags:','hueman').'</span> ','','</p>'); ?>
<?php if ( ot_get_option( 'post-nav' ) == 'content') { get_template_part('inc/post-nav'); } ?>
