Thank you for your answer.

Switching to apa style solved the number problem.

For the sorting problem, I replaced lines 671-672 in the zotpress.shortcode.bib.js?with the code below ; not sure if it’s fully compatible, but here’s the code

if ( jQuery("#"+$instance.attr("id")+" .zp-List h3[rel='"+orderedType+"']").length == 0 ) {
						var insertedH3 = false;
						if ( jQuery("#"+$instance.attr("id")+" .zp-List h3[rel]").length > 0 ) {
							jQuery("#"+$instance.attr("id")+" .zp-List h3[rel]").each(function(){
								var h3Rel = jQuery(this).attr("rel");
								if (orderby == "asc") {
									if (orderedType<h3Rel) {
										insertedH3 = true;
										jQuery(this).before( "<h3 rel='"+orderedType+"'>"+tempTitle+"</h3>\n" );
										return false;
									}
								} else {
									if (h3Rel<orderedType) {
										insertedH3 = true;
										jQuery(this).before( "<h3 rel='"+orderedType+"'>"+tempTitle+"</h3>\n" );
										return false;
									}
								}
							});
						}
						if ( !insertedH3 ) {
							jQuery("#"+$instance.attr("id")+" .zp-List").append( "<h3 rel='"+orderedType+"'>"+tempTitle+"</h3>\n" );
						}
					}