What is JotForm?
JotForm is a free online form builder which helps you create online forms without writing a single line of code. No sign-up required.
At JotForm, we want to make sure that you’re getting the online form builder help that you need. Our friendly customer support team is available 24/7.
We believe that if one user has a question, there could be more users who may have the same question. This is why many of our support forum threads are public and available to be searched and viewed. If you’d like help immediately, feel free to search for a similar question, or submit your question or concern.
I tried the app with a few of my forms and it appears to not work properly. I checked the app and it doesn't look like it is supported. It was created by an independent developer so it is likely to not be updated. My apologies.
Just to add to this, you can pre-populate the form via the URL:
There is a link to an app in that guide that will create the URL for you.