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 cloned your form and also am unable to apply a theme to it. It looks great in the form designer, but when previewed it displays other things. Likely there's some extra CSS that needs to be removed.
I'll escalate this and have someone take a look. We apologize for the inconvenience.
There have been implemented some fixes today. I created PDF version of your form and it seems fine now. Thanks for your feedback and your patience.