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.
Am I right to assume that you have two issues here? One for when you embed a form to Weebly and one when you preview the form. Can you please confirm?
For embedding form to Weebly, please follow this guide: https://www.jotform.com/help/215-Adding-a-Form-to-Weebly. Let us know if you still can't make so we can re-check.
And if there's an issue with previewing your form in our form builder, please take a screenshot of that and post it on a separate thread: Contact JotForm Support. Follow this guide on posting images to our forum: How to upload and add screenshots to support forum?