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.
That is because your Sender Email in Notifier is empty. Leaving it as "Please Select" will cause this problem to your form:
I've fixed it for your convenience. Using email@example.com from the dropdown options. Please review the following guide for more details:
Let us know if you have any questions or if you need further assistance.