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.
I've just tested your form and it redirected me to Paypal payment gateway without any problems.
You can check in your Incomplete Payments my test submission. If you are still having problems on this, may I know what browser and device you are using when you replicated the issue?
We'll wait for your response.