porque sale que se a perdido el DNS del servidor de JoForm y se puede visualizar nada

Disculpe,  no puedo publicar nada, no se me visualiza  nada.

I could not replicate the issue at my end. This is the screenshot of what I see at my end .

I would suggest you to clear the form cache and the browser cache and check again. Browser cache http://www.refreshyourcache.com/en/home/ Form cache https://www.jotform.com/help/229-How-to-Clear-Your-Form-Cache

Also try using a different ISP.

If none of the above works , then let us know your observations so we can investigate further.