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How to make the thank you page appears in a pop up and the user can simply close it.Asked by pierocan on February 04, 2016 at 06:48 PM
It is not possible to do so in the form builder, however you can get the full source code of your form and apply some code to the form so you can achieve the desired result.
You can check out this thread for a more detailed guide on how to make the thank you page appear in a pop-up. Pop-up Thank you and redirect to complete submissions