Reorder Taxonomy Fields checkboxes

You can use uwpqsf_taxonomy_arg to customize the order.

eg:

add_filter('uwpqsf_taxonomy_arg', 'reorder_tax_terms','',3);
function reorder_tax_terms($args,$taxname,$formid){
    if($taxname == 'your_checkbox_tax_slig'){
          $args['orderby '] = 'id';
          $args['order '] = 'DESC';
    }
    return $args;
}

Note that the $taxname and $formid can be use to identify which form and taxonomy you want to reorder.

Also the other orderby and order arguments can be found here.