What is JotForm?
JotForm is a free online form builder which helps you create online forms without writing a single line of code. No sign-up required.
At JotForm, we want to make sure that you’re getting the online form builder help that you need. Our friendly customer support team is available 24/7.
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 understand you are receiving an error when you try to add your jotform to a facebook page tab.
I looked on your website, but I didn't see a jotform which I am under the impression is because of the error you are getting.
Can you please follow this guide here https://www.jotform.com/help/22-Adding-Form-to-Facebook-Pages to make sure that you are doing this correctly.
If that does not work and you are still having the issue can you please tell us exactly what error you are seeing when you try to add it?
Alternatively, you may also screenshot it and attach a picture here so that we can better understand the problem which you are having.