JotForm is a free online form builder which helps you create online forms without writing a single line of code. No sign-up required.
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.
You need to delete the other submissions. You can only have 500 submissions in your storage. Please keep an eye on your total submissions and delete them whenever you can. You'll receive a warning email about this once you'll reach the total of 450 submissions. Here's a guide on How-To-Delete-Submissions-and-Keep-the-Form.
Please export them so that you have a back up of the submissions. You can export them to an excel file, here' a guide: How-to-Export-Form-Data-to-Excel
Let us know if you have any questions. Thank you.