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 do not think that we remove any data from integrated Google Spreadsheets. However, each form integration or re-integration creates a new spreadsheet. For example, if you added some columns, but then re-integrated the form with the Google Spreadsheet, it might be a reason of the issue.
Please check your Google Drive to see if you have many versions of the spreadsheet. If you need any further assistance on this, please let us know.