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JotForm is a free online form builder which helps you create online forms without writing a single line of code. No sign-up required.
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I have checked the last form you have updated https://form.jotform.com/62285892836268 and I cannot replicate your issue, the form saves fine on my end.
Here is a screen-cast:
The revision history shows that last change was made 4 hours ago, you may also check it by following this guide: How-to-view-form-revision-history
Could you please try to save your form again?
If the issue still persists on your end, please provide us a screenshot of the web console it will help us to know if there are errors that are not allowing the form to be saved properly.
This guide will help you to upload a screenshot with your next reply: How-to-add-screenshots-images-to-questions-in-support-forum