Allowing forms to be filled up again

¿Cómo puedo hacer justo lo contrario? quiero que el formulario al final tenga la ocpión de que la persona lo conteste nuevamente. ¿Cómo hago para que no se reescriba su respuesta?

By default, your users can open and submit your form multiple times. If you like, you can redirect the user back to the form after hitting the Submit button.

The idea is to redirect the Thank You page back to the form using the form's direct link. Please check this demo form: https://form.jotformpro.com/62445847294971. Here's a guide on how I created that demo form:

First, you need to get the form's direct link. Go to "Publish" and you'll see the direct link in the Quick Share section. Please copy and paste it in a text editor.

Second, in the Form Builder, click "Settings" in the top menu. After that, go to "Thank You Page" section. Select the "Redirect to external link" and then paste the form's direct link in the URL field.

Related guides: 
Setting-Up-the-Thank-You-Page
Redirecting-Users-to-a-Different-Page

Hope that helps. If you have any questions, let us know. Thank you.