The Guarantee Period is the time you have to request the Perfeito refund of what you paid for your purchase if you are not satisfied. As soon as it is requested, your refund is processed automatically by the platform in up to 5 days. For payments via "boleto" it is http://marcoifbyu.dsiblogger.com/27937293/o-maior-guia-para-cursos-de-canto-online