I set up a form and suddenly it is stop working sending email

recebo os pedidos por email e de repente o formulario deixo de responder, vcs podem me ajudar 

If I understand you correctly, you're not getting email notifications. Can you please check your spam mail folder or junk mail folder? 

I cloned your form and I was not able to replicate the issue. I also check your mail logs everything was sent successfully. If you can't find the email notifications in the spam mail folder or junk mail. Please change your Sender Email from noreply@jotform.com to your own email address.

Let us know how it goes. If the issue still persist, we'll investigate it further.