Continue Forms Later doesn't work

I do not know what happened. Until today 'Continue Forms Later' worked perfectly well when I turned to the form from Preview (see site), all data were entered, but not now, the fields are empty. And I do not know why. Any idea?

http://www.jotform.com//?formID=53181187616357

Well, if it takes me a few seconds before returning to the Preview form 'Continue form later' seems to work. Thanks.

I tested your form and it is working for me too. I presume it is working on your end now.

If you have any other problems with the form, let us know.

I do not understand your mensaje.What does it means 'I presume it is working on your end now'. Today I tried again and 'Continue forms later' fails again, not only in my computer but in other three is the same.
If I close the form and return to open the fields are filled, but if I do the process of completing the form, do the preview and return to the form, the fields are empty. It's a bit frustrating, because last week there was no problem. Any idea why this happens? Thanks in advance.

EltonCris thinks that the autofill is now working in your form. 

I think you have misunderstood how the autofill feature works. Please note that when you submit the form, that means the form is completed and NO data will remain in the form. 

Autofill works this way; you are filling the form and can't finish it so you have waited 4 seconds for the data to get saved. You close the form/website. Come back to it again later to continue filling up the form without the need to fill the first few fields since they are filled already per the saved data.

Thanks