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 would suggest you to follow this guide so you will know how to get your API info: How-to-Obtain-PayPal-API-Credentials
If you're getting the message "Unable to Verify" when testing your API info in our wizard, please check this thread, there is a response from one of our developers about why this message might be appearing: https://www.jotform.com/answers/874584
If you're getting another message, please provide us a screenshot fo that, it would be helpful to know why you're not able to integrate your form.
This guide will help you to upload your screenshot on your next reply: How-to-add-screenshots-images-to-questions-in-support-forum
We will wait for your response.