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.
The Thank You Page Redirect in your form is configured correctly. The link you provided is working properly.
I opened your webpage and I did a test submission. After hitting the Submit button, it redirected me to the Thank You Page link. Here's a screenshot:
I would recommend you re-embedding the form using the iFrame method. Here's a guide: https://www.jotform.com/help/148-Getting-the-form-iFrame-code.
I will clear your form cache so that your forms will be refreshed from our servers. You may also try using another browser just to verify if it will work or not.
Hope that helps. Thank you.