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.
Based on your screenshots seems that you were able to set everything up and then when you click on "Complete Integration" button, it just shows Saving and stays at the same without any change.
Can you please try and recreate the same, but if it happens again, to try it in a browser like FireFox and let us know how it goes.