Hello Jessica,
Thanks for reaching out! Let me try to help you with this one.
Paste this code in your functions.php file (Appearance > Editor > choose functions.php on the right side):
/* CHANGE CHRONOLOGICAL ORDER OF TAG QUERY */
// Runs before the posts are fetched
add_filter( 'pre_get_posts' , 'change_tag_order' );
// Function accepting current query
function change_tag_order( $query ) {
// Check if the query is for tags
if($query->is_tag )
// Query was for tags, then set order
$query->set( 'order' , 'asc' );
// Return the query (else there's no more query, oops!
return $query;
}
Please note, this might also change the order of the blog posts, if those are called by tag.
Let me know if this helps.
Cheers,
Andras