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.
I'm afraid that we only support filtering by submission date at this time.
If it can be of any help, we do support custom Time Frame option for a custom starting and ending date of the submissions.
You can download the excel of your submissions and edit it manually to remove the entries that you do not want to be there, but we do not currently offer any automatic way of submission filtering other than filtering by date.
Please let us know if we can be of any further assistance, we would be glad to help.