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.
We currently have no other users reporting a similar incident at this time. So, it could be an isolated case that could be due to network related issue also.
Please let us know if the issue persist and you cannot still save the form changes.