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.
If I understood you correctly you are unable to edit your form. I have tested one of my forms, but I was not able to replicate mentioned issue. I was able to edit and save my form inside of Form Builder without any issues.
If the changes you made were saved, then it was probably temporarily issue.
I would also suggest you to use Google Chrome or Mozilla Firefox when editing form.
If you are still unable to edit your form, please provide us ID of the form you are working on. Also please explain what are you trying to edit inside of your form. If possible provide us a screenshot.
Let us know if you need further assistance.