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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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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 was able to reproduce the issue. It seems that ti will not work with the options of the subproduts functio. So, I have forwarded this isseu to our next level support so that they can help us to find a prompt solution.
We will inform you via this thread once it is resolved.
This has been fixed.
Let us know if you're still having issues.