Hi,
there are two error in the free plugin, version 1.0.6:
first class.yith-advanced-refund-system.php, line 265, the file doesn’t exist in the plugin. If you comment line 264 and 265, this fix the issue.
Then when a user want to refund, after having written the reason, there is a js error in ywcars-frontend.min.js. It’s on the “Fix for Safari” code in full js file. If you comment it in min file, it works:
......request_window_close_button.hide();/*var t=form_data.get("ywcars_form_attachment[]");""===t.name&&""===t.type&&form_data.delete("ywcars_form_attachment[]"),*/o.ajax(a)}......