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.
Can you please try to remove the "2" after feedback found on the first line of the lightbox embed code? See if this fixed the problem.
If not, please let us know the website URL containing the lightbox form so we can review it here.