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.
I cloned your form and tried to make some changes. I was able to save it without any issues.
However, I checked the conditions and it looks like there are conditions with errors in them. This might occur when a field connected to the condition was deleted.
This might be why you received an error when you tried to duplicate some of the fields. I suggest you fix these conditions before you duplicate the fields, then try saving the changes.
Do inform us if you need further assistance,
Thanks. I will fix the conditions. This was a big help.