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've checked your forms and I've seen that the email firstname.lastname@example.org was in our bounce list as you can see the screenshot below:
I've removed the email from our bounce list and you are able to receive emails normally now.
Moreover, you can check any email if it is in our bounce list or not. Please check the following link to see how it is done: https://www.jotform.com/help/262-How-to-Remove-Your-Email-Address-from-Bounce-List
Please check it and If you need any doubt or question, do not hesitate to contact us.