We accidently deleted submissions and we would like to import data back to the form

We accidently deleted submissions from our interchange information form.  We have a recent download of the submissions.  Can we add them back to the form?

I tried to us the upload app on the internet but it did not work.  

The last download is available here: https://drive.google.com/open?id=16pSDsAJw8YpXoLGgLiGNEckbyOCRKCHm7fWPqMwbVxI

You have to use our import app to import the data back into the form.

https://www.jotform.com/help/308-Import-App-Easily-import-your-data-in-Excel-or-CSV-to-JotForm

Please note that this app cannot import images so your signature will be left blank.

If you cannot get it to work, please update this thread so we can take a look.